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774 lines
26 KiB
774 lines
26 KiB
[ |
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{ |
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"id": "all-property", |
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"title": "`all` Property", |
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"description": "A property for defining the reset of all properties of an element", |
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"specification": "https://www.w3.org/TR/css-cascade-3/#all-shorthand", |
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"stage": 3, |
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"caniuse": "css-all", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/all" |
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}, |
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"example": "a {\n all: initial;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/maximkoretskiy/postcss-initial" |
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} |
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] |
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}, |
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{ |
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"id": "any-link-pseudo-class", |
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"title": "`:any-link` Hyperlink Pseudo-Class", |
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"description": "A pseudo-class for matching anchor elements independent of whether they have been visited", |
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"specification": "https://www.w3.org/TR/selectors-4/#any-link-pseudo", |
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"stage": 2, |
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"caniuse": "css-any-link", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:any-link" |
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}, |
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"example": "nav :any-link > span {\n background-color: yellow;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-pseudo-class-any-link" |
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} |
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] |
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}, |
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{ |
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"id": "blank-pseudo-class", |
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"title": "`:blank` Empty-Value Pseudo-Class", |
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"description": "A pseudo-class for matching form elements when they are empty", |
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"specification": "https://drafts.csswg.org/selectors-4/#blank", |
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"stage": 1, |
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"example": "input:blank {\n background-color: yellow;\n}", |
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"polyfills": [ |
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{ |
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"type": "JavaScript Library", |
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"link": "https://github.com/csstools/css-blank-pseudo" |
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}, |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/csstools/css-blank-pseudo" |
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} |
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] |
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}, |
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{ |
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"id": "break-properties", |
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"title": "Break Properties", |
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"description": "Properties for defining the break behavior between and within boxes", |
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"specification": "https://www.w3.org/TR/css-break-3/#breaking-controls", |
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"stage": 3, |
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"caniuse": "multicolumn", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/break-after" |
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}, |
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"example": "a {\n break-inside: avoid;\n break-before: avoid-column;\n break-after: always;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/shrpne/postcss-page-break" |
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} |
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] |
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}, |
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{ |
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"id": "case-insensitive-attributes", |
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"title": "Case-Insensitive Attributes", |
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"description": "An attribute selector matching attribute values case-insensitively", |
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"specification": "https://www.w3.org/TR/selectors-4/#attribute-case", |
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"stage": 2, |
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"caniuse": "css-case-insensitive", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors" |
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}, |
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"example": "[frame=hsides i] {\n border-style: solid none;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/Semigradsky/postcss-attribute-case-insensitive" |
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} |
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] |
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}, |
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{ |
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"id": "color-adjust", |
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"title": "`color-adjust` Property", |
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"description": "The color-adjust property is a non-standard CSS extension that can be used to force printing of background colors and images", |
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"specification": "https://www.w3.org/TR/css-color-4/#color-adjust", |
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"stage": 2, |
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"caniuse": "css-color-adjust", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/color-adjust" |
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}, |
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"example": ".background {\n background-color:#ccc;\n}\n.background.color-adjust {\n color-adjust: economy;\n}\n.background.color-adjust-exact {\n color-adjust: exact;\n}" |
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}, |
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{ |
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"id": "color-functional-notation", |
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"title": "Color Functional Notation", |
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"description": "A space and slash separated notation for specifying colors", |
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"specification": "https://drafts.csswg.org/css-color/#ref-for-funcdef-rgb%E2%91%A1%E2%91%A0", |
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"stage": 1, |
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"example": "em {\n background-color: hsl(120deg 100% 25%);\n box-shadow: 0 0 0 10px hwb(120deg 100% 25% / 80%);\n color: rgb(0 255 0);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-color-functional-notation" |
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} |
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] |
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}, |
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{ |
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"id": "color-mod-function", |
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"title": "`color-mod()` Function", |
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"description": "A function for modifying colors", |
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"specification": "https://www.w3.org/TR/css-color-4/#funcdef-color-mod", |
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"stage": -1, |
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"example": "p {\n color: color-mod(black alpha(50%));\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-color-mod-function" |
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} |
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] |
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}, |
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{ |
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"id": "custom-media-queries", |
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"title": "Custom Media Queries", |
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"description": "An at-rule for defining aliases that represent media queries", |
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"specification": "https://drafts.csswg.org/mediaqueries-5/#at-ruledef-custom-media", |
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"stage": 1, |
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"example": "@custom-media --narrow-window (max-width: 30em);\n\n@media (--narrow-window) {}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-custom-media" |
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} |
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] |
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}, |
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{ |
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"id": "custom-properties", |
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"title": "Custom Properties", |
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"description": "A syntax for defining custom values accepted by all CSS properties", |
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"specification": "https://www.w3.org/TR/css-variables-1/", |
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"stage": 3, |
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"caniuse": "css-variables", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/var" |
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}, |
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"example": "img {\n --some-length: 32px;\n\n height: var(--some-length);\n width: var(--some-length);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-custom-properties" |
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} |
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] |
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}, |
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{ |
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"id": "custom-property-sets", |
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"title": "Custom Property Sets", |
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"description": "A syntax for storing properties in named variables, referenceable in other style rules", |
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"specification": "https://tabatkins.github.io/specs/css-apply-rule/", |
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"stage": -1, |
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"caniuse": "css-apply-rule", |
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"example": "img {\n --some-length-styles: {\n height: 32px;\n width: 32px;\n };\n\n @apply --some-length-styles;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/pascalduez/postcss-apply" |
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} |
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] |
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}, |
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{ |
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"id": "custom-selectors", |
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"title": "Custom Selectors", |
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"description": "An at-rule for defining aliases that represent selectors", |
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"specification": "https://drafts.csswg.org/css-extensions/#custom-selectors", |
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"stage": 1, |
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"example": "@custom-selector :--heading h1, h2, h3, h4, h5, h6;\n\narticle :--heading + p {}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-custom-selectors" |
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} |
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] |
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}, |
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{ |
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"id": "dir-pseudo-class", |
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"title": "`:dir` Directionality Pseudo-Class", |
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"description": "A pseudo-class for matching elements based on their directionality", |
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"specification": "https://www.w3.org/TR/selectors-4/#dir-pseudo", |
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"stage": 2, |
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"caniuse": "css-dir-pseudo", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:dir" |
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}, |
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"example": "blockquote:dir(rtl) {\n margin-right: 10px;\n}\n\nblockquote:dir(ltr) {\n margin-left: 10px;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-dir-pseudo-class" |
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} |
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] |
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}, |
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{ |
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"id": "double-position-gradients", |
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"title": "Double Position Gradients", |
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"description": "A syntax for using two positions in a gradient.", |
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"specification": "https://www.w3.org/TR/css-images-4/#color-stop-syntax", |
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"stage": 2, |
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"caniuse-compat": { |
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"and_chr": { |
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"71": "y" |
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}, |
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"chrome": { |
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"71": "y" |
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} |
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}, |
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"example": ".pie_chart {\n background-image: conic-gradient(yellowgreen 40%, gold 0deg 75%, #f06 0deg);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-double-position-gradients" |
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} |
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] |
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}, |
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{ |
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"id": "environment-variables", |
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"title": "Custom Environment Variables", |
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"description": "A syntax for using custom values accepted by CSS globally", |
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"specification": "https://drafts.csswg.org/css-env-1/", |
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"stage": 0, |
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"caniuse-compat": { |
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"and_chr": { |
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"69": "y" |
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}, |
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"chrome": { |
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"69": "y" |
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}, |
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"ios_saf": { |
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"11.2": "y" |
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}, |
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"safari": { |
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"11.2": "y" |
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} |
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}, |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/env" |
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}, |
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"example": "@media (max-width: env(--brand-small)) {\n body {\n padding: env(--brand-spacing);\n }\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-env-function" |
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} |
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] |
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}, |
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{ |
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"id": "focus-visible-pseudo-class", |
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"title": "`:focus-visible` Focus-Indicated Pseudo-Class", |
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"description": "A pseudo-class for matching focused elements that indicate that focus to a user", |
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"specification": "https://www.w3.org/TR/selectors-4/#focus-visible-pseudo", |
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"stage": 2, |
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"caniuse": "css-focus-visible", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-visible" |
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}, |
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"example": ":focus:not(:focus-visible) {\n outline: 0;\n}", |
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"polyfills": [ |
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{ |
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"type": "JavaScript Library", |
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"link": "https://github.com/WICG/focus-visible" |
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}, |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-focus-visible" |
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} |
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] |
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}, |
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{ |
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"id": "focus-within-pseudo-class", |
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"title": "`:focus-within` Focus Container Pseudo-Class", |
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"description": "A pseudo-class for matching elements that are either focused or that have focused descendants", |
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"specification": "https://www.w3.org/TR/selectors-4/#focus-within-pseudo", |
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"stage": 2, |
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"caniuse": "css-focus-within", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-within" |
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}, |
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"example": "form:focus-within {\n background: rgba(0, 0, 0, 0.3);\n}", |
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"polyfills": [ |
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{ |
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"type": "JavaScript Library", |
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"link": "https://github.com/jonathantneal/focus-within" |
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}, |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-focus-within" |
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} |
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] |
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}, |
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{ |
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"id": "font-variant-property", |
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"title": "`font-variant` Property", |
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"description": "A property for defining the usage of alternate glyphs in a font", |
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"specification": "https://www.w3.org/TR/css-fonts-3/#propdef-font-variant", |
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"stage": 3, |
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"caniuse": "font-variant-alternates", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/font-variant" |
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}, |
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"example": "h2 {\n font-variant: small-caps;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-font-variant" |
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} |
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] |
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}, |
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{ |
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"id": "gap-properties", |
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"title": "Gap Properties", |
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"description": "Properties for defining gutters within a layout", |
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"specification": "https://www.w3.org/TR/css-grid-1/#gutters", |
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"stage": 3, |
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"caniuse-compat": { |
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"chrome": { |
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"66": "y" |
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}, |
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"edge": { |
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"16": "y" |
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}, |
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"firefox": { |
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"61": "y" |
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}, |
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"safari": { |
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"11.2": "y", |
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"TP": "y" |
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} |
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}, |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/gap" |
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}, |
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"example": ".grid-1 {\n gap: 20px;\n}\n\n.grid-2 {\n column-gap: 40px;\n row-gap: 20px;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-gap-properties" |
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} |
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] |
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}, |
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{ |
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"id": "gray-function", |
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"title": "`gray()` Function", |
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"description": "A function for specifying fully desaturated colors", |
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"specification": "https://www.w3.org/TR/css-color-4/#funcdef-gray", |
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"stage": 2, |
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"example": "p {\n color: gray(50);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-color-gray" |
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} |
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] |
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}, |
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{ |
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"id": "grid-layout", |
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"title": "Grid Layout", |
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"description": "A syntax for using a grid concept to lay out content", |
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"specification": "https://www.w3.org/TR/css-grid-1/", |
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"stage": 3, |
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"caniuse": "css-grid", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid" |
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}, |
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"example": "section {\n display: grid;\n grid-template-columns: 100px 100px 100px;\n grid-gap: 10px;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/autoprefixer" |
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} |
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] |
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}, |
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{ |
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"id": "has-pseudo-class", |
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"title": "`:has()` Relational Pseudo-Class", |
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"description": "A pseudo-class for matching ancestor and sibling elements", |
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"specification": "https://www.w3.org/TR/selectors-4/#has-pseudo", |
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"stage": 2, |
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"caniuse": "css-has", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:has" |
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}, |
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"example": "a:has(> img) {\n display: block;\n}", |
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"polyfills": [ |
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{ |
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"type": "JavaScript Library", |
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"link": "https://github.com/csstools/css-has-pseudo" |
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}, |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/csstools/css-has-pseudo" |
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} |
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] |
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}, |
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{ |
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"id": "hexadecimal-alpha-notation", |
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"title": "Hexadecimal Alpha Notation", |
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"description": "A 4 & 8 character hex color notation for specifying the opacity level", |
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"specification": "https://www.w3.org/TR/css-color-4/#hex-notation", |
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"stage": 2, |
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"caniuse": "css-rrggbbaa", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#Syntax_2" |
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}, |
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"example": "section {\n background-color: #f3f3f3f3;\n color: #0003;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-color-hex-alpha" |
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} |
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] |
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}, |
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{ |
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"id": "hwb-function", |
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"title": "`hwb()` Function", |
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"description": "A function for specifying colors by hue and then a degree of whiteness and blackness to mix into it", |
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"specification": "https://www.w3.org/TR/css-color-4/#funcdef-hwb", |
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"stage": 2, |
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"example": "p {\n color: hwb(120 44% 50%);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/postcss/postcss-color-hwb" |
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} |
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] |
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}, |
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{ |
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"id": "image-set-function", |
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"title": "`image-set()` Function", |
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"description": "A function for specifying image sources based on the user’s resolution", |
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"specification": "https://www.w3.org/TR/css-images-4/#image-set-notation", |
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"stage": 2, |
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"caniuse": "css-image-set", |
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"example": "p {\n background-image: image-set(\n \"foo.png\" 1x,\n \"foo-2x.png\" 2x,\n \"foo-print.png\" 600dpi\n );\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-image-set-function" |
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} |
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] |
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}, |
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{ |
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"id": "in-out-of-range-pseudo-class", |
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"title": "`:in-range` and `:out-of-range` Pseudo-Classes", |
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"description": "A pseudo-class for matching elements that have range limitations", |
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"specification": "https://www.w3.org/TR/selectors-4/#range-pseudos", |
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"stage": 2, |
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"caniuse": "css-in-out-of-range", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:in-range" |
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}, |
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"example": "input:in-range {\n background-color: rgba(0, 255, 0, 0.25);\n}\ninput:out-of-range {\n background-color: rgba(255, 0, 0, 0.25);\n border: 2px solid red;\n}" |
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}, |
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{ |
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"id": "lab-function", |
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"title": "`lab()` Function", |
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"description": "A function for specifying colors expressed in the CIE Lab color space", |
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"specification": "https://www.w3.org/TR/css-color-4/#funcdef-lab", |
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"stage": 2, |
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"example": "body {\n color: lab(240 50 20);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-lab-function" |
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} |
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] |
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}, |
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{ |
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"id": "lch-function", |
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"title": "`lch()` Function", |
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"description": "A function for specifying colors expressed in the CIE Lab color space with chroma and hue", |
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"specification": "https://www.w3.org/TR/css-color-4/#funcdef-lch", |
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"stage": 2, |
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"example": "body {\n color: lch(53 105 40);\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
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"link": "https://github.com/jonathantneal/postcss-lab-function" |
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} |
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] |
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}, |
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{ |
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"id": "logical-properties-and-values", |
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"title": "Logical Properties and Values", |
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"description": "Flow-relative (left-to-right or right-to-left) properties and values", |
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"specification": "https://www.w3.org/TR/css-logical-1/", |
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"stage": 2, |
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"caniuse": "css-logical-props", |
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"docs": { |
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"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Logical_Properties" |
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}, |
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"example": "span:first-child {\n float: inline-start;\n margin-inline-start: 10px;\n}", |
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"polyfills": [ |
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{ |
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"type": "PostCSS Plugin", |
|
"link": "https://github.com/jonathantneal/postcss-logical-properties" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "matches-pseudo-class", |
|
"title": "`:matches()` Matches-Any Pseudo-Class", |
|
"description": "A pseudo-class for matching elements in a selector list", |
|
"specification": "https://www.w3.org/TR/selectors-4/#matches-pseudo", |
|
"stage": 2, |
|
"caniuse": "css-matches-pseudo", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:matches" |
|
}, |
|
"example": "p:matches(:first-child, .special) {\n margin-top: 1em;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/postcss/postcss-selector-matches" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "media-query-ranges", |
|
"title": "Media Query Ranges", |
|
"description": "A syntax for defining media query ranges using ordinary comparison operators", |
|
"specification": "https://www.w3.org/TR/mediaqueries-4/#range-context", |
|
"stage": 3, |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/Media_Queries/Using_media_queries#Syntax_improvements_in_Level_4" |
|
}, |
|
"example": "@media (width < 480px) {}\n\n@media (480px <= width < 768px) {}\n\n@media (width >= 768px) {}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/postcss/postcss-media-minmax" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "nesting-rules", |
|
"title": "Nesting Rules", |
|
"description": "A syntax for nesting relative rules within rules", |
|
"specification": "https://drafts.csswg.org/css-nesting-1/", |
|
"stage": 1, |
|
"example": "article {\n & p {\n color: #333;\n }\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/jonathantneal/postcss-nesting" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "not-pseudo-class", |
|
"title": "`:not()` Negation List Pseudo-Class", |
|
"description": "A pseudo-class for ignoring elements in a selector list", |
|
"specification": "https://www.w3.org/TR/selectors-4/#negation-pseudo", |
|
"stage": 2, |
|
"caniuse": "css-not-sel-list", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:not" |
|
}, |
|
"example": "p:not(:first-child, .special) {\n margin-top: 1em;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/postcss/postcss-selector-not" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "overflow-property", |
|
"title": "`overflow` Shorthand Property", |
|
"description": "A property for defining `overflow-x` and `overflow-y`", |
|
"specification": "https://www.w3.org/TR/css-overflow-3/#propdef-overflow", |
|
"stage": 2, |
|
"caniuse": "css-overflow", |
|
"caniuse-compat": { |
|
"and_chr": { |
|
"68": "y" |
|
}, |
|
"and_ff": { |
|
"61": "y" |
|
}, |
|
"chrome": { |
|
"68": "y" |
|
}, |
|
"firefox": { |
|
"61": "y" |
|
} |
|
}, |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/overflow" |
|
}, |
|
"example": "html {\n overflow: hidden auto;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/jonathantneal/postcss-overflow-shorthand" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "overflow-wrap-property", |
|
"title": "`overflow-wrap` Property", |
|
"description": "A property for defining whether to insert line breaks within words to prevent overflowing", |
|
"specification": "https://www.w3.org/TR/css-text-3/#overflow-wrap-property", |
|
"stage": 2, |
|
"caniuse": "wordwrap", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/overflow-wrap" |
|
}, |
|
"example": "p {\n overflow-wrap: break-word;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/mattdimu/postcss-replace-overflow-wrap" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "overscroll-behavior-property", |
|
"title": "`overscroll-behavior` Property", |
|
"description": "Properties for controlling when the scroll position of a scroll container reaches the edge of a scrollport", |
|
"specification": "https://drafts.csswg.org/css-overscroll-behavior", |
|
"stage": 1, |
|
"caniuse": "css-overscroll-behavior", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/overscroll-behavior" |
|
}, |
|
"example": ".messages {\n height: 220px;\n overflow: auto;\n overscroll-behavior-y: contain;\n}\n\nbody {\n margin: 0;\n overscroll-behavior: none;\n}" |
|
}, |
|
{ |
|
"id": "place-properties", |
|
"title": "Place Properties", |
|
"description": "Properties for defining alignment within a layout", |
|
"specification": "https://www.w3.org/TR/css-align-3/#place-items-property", |
|
"stage": 2, |
|
"caniuse-compat": { |
|
"chrome": { |
|
"59": "y" |
|
}, |
|
"firefox": { |
|
"45": "y" |
|
} |
|
}, |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/place-content" |
|
}, |
|
"example": ".example {\n place-content: flex-end;\n place-items: center / space-between;\n place-self: flex-start / center;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/jonathantneal/postcss-place" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "prefers-color-scheme-query", |
|
"title": "`prefers-color-scheme` Media Query", |
|
"description": "A media query to detect if the user has requested the system use a light or dark color theme", |
|
"specification": "https://drafts.csswg.org/mediaqueries-5/#prefers-color-scheme", |
|
"stage": 1, |
|
"caniuse": "prefers-color-scheme", |
|
"caniuse-compat": { |
|
"ios_saf": { |
|
"12.1": "y" |
|
}, |
|
"safari": { |
|
"12.1": "y" |
|
} |
|
}, |
|
"example": "body {\n background-color: white;\n color: black;\n}\n\n@media (prefers-color-scheme: dark) {\n body {\n background-color: black;\n color: white;\n }\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "JavaScript Library", |
|
"link": "https://github.com/csstools/css-prefers-color-scheme" |
|
}, |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/csstools/css-prefers-color-scheme" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "prefers-reduced-motion-query", |
|
"title": "`prefers-reduced-motion` Media Query", |
|
"description": "A media query to detect if the user has requested less animation and general motion on the page", |
|
"specification": "https://drafts.csswg.org/mediaqueries-5/#prefers-reduced-motion", |
|
"stage": 1, |
|
"caniuse": "prefers-reduced-motion", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion" |
|
}, |
|
"example": ".animation {\n animation: vibrate 0.3s linear infinite both; \n}\n\n@media (prefers-reduced-motion: reduce) {\n .animation {\n animation: none;\n }\n}" |
|
}, |
|
{ |
|
"id": "read-only-write-pseudo-class", |
|
"title": "`:read-only` and `:read-write` selectors", |
|
"description": "Pseudo-classes to match elements which are considered user-alterable", |
|
"specification": "https://www.w3.org/TR/selectors-4/#rw-pseudos", |
|
"stage": 2, |
|
"caniuse": "css-read-only-write", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/:read-only" |
|
}, |
|
"example": "input:read-only {\n background-color: #ccc;\n}" |
|
}, |
|
{ |
|
"id": "rebeccapurple-color", |
|
"title": "`rebeccapurple` Color", |
|
"description": "A particularly lovely shade of purple in memory of Rebecca Alison Meyer", |
|
"specification": "https://www.w3.org/TR/css-color-4/#valdef-color-rebeccapurple", |
|
"stage": 2, |
|
"caniuse": "css-rebeccapurple", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/color_value" |
|
}, |
|
"example": "html {\n color: rebeccapurple;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/postcss/postcss-color-rebeccapurple" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "system-ui-font-family", |
|
"title": "`system-ui` Font Family", |
|
"description": "A generic font used to match the user’s interface", |
|
"specification": "https://www.w3.org/TR/css-fonts-4/#system-ui-def", |
|
"stage": 2, |
|
"caniuse": "font-family-system-ui", |
|
"docs": { |
|
"mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/font-family#Syntax" |
|
}, |
|
"example": "body {\n font-family: system-ui;\n}", |
|
"polyfills": [ |
|
{ |
|
"type": "PostCSS Plugin", |
|
"link": "https://github.com/JLHwung/postcss-font-family-system-ui" |
|
} |
|
] |
|
}, |
|
{ |
|
"id": "when-else-rules", |
|
"title": "When/Else Rules", |
|
"description": "At-rules for specifying media queries and support queries in a single grammar", |
|
"specification": "https://tabatkins.github.io/specs/css-when-else/", |
|
"stage": 0, |
|
"example": "@when media(width >= 640px) and (supports(display: flex) or supports(display: grid)) {\n /* A */\n} @else media(pointer: coarse) {\n /* B */\n} @else {\n /* C */\n}" |
|
}, |
|
{ |
|
"id": "where-pseudo-class", |
|
"title": "`:where()` Zero-Specificity Pseudo-Class", |
|
"description": "A pseudo-class for matching elements in a selector list without contributing specificity", |
|
"specification": "https://drafts.csswg.org/selectors-4/#where-pseudo", |
|
"stage": 1, |
|
"example": "a:where(:not(:hover)) {\n text-decoration: none;\n}" |
|
} |
|
]
|
|
|