{ "Type selectors": { "syntax": "element", "groups": [ "Basic Selectors", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Type_selectors" }, "Class selectors": { "syntax": ".class", "groups": [ "Basic Selectors", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Class_selectors" }, "ID selectors": { "syntax": "#id", "groups": [ "Basic Selectors", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/ID_selectors" }, "Universal selectors": { "syntax": "*", "groups": [ "Basic Selectors", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Universal_selectors" }, "Attribute selectors": { "syntax": "[attr=value]", "groups": [ "Basic Selectors", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Attribute_selectors" }, "Selector list": { "syntax": ",", "groups": [ "Grouping Selectors", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Selector_list" }, "Adjacent sibling combinator": { "syntax": "A + B", "groups": [ "Combinators", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Adjacent_sibling_combinator" }, "General sibling combinator": { "syntax": "A ~ B", "groups": [ "Combinators", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/General_sibling_combinator" }, "Child combinator": { "syntax": "A > B", "groups": [ "Combinators", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Child_combinator" }, "Descendant combinator": { "syntax": "A B", "groups": [ "Combinators", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Descendant_combinator" }, "Column combinator": { "syntax": "A || B", "groups": [ "Combinators", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Column_combinator" }, "Pseudo-classes": { "syntax": ":", "groups": [ "Pseudo", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Pseudo-classes" }, "Pseudo-elements": { "syntax": "::", "groups": [ "Pseudo", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Pseudo-elements" }, ":active": { "syntax": ":active", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:active" }, ":any-link": { "syntax": ":any-link", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:any-link" }, ":checked": { "syntax": ":checked", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:checked" }, ":current": { "syntax": ":current", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:current" }, ":blank": { "syntax": ":blank", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:blank" }, ":default": { "syntax": ":default", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:default" }, ":defined": { "syntax": ":defined", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:defined" }, ":dir": { "syntax": ":dir( [ ltr | rtl ] )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:dir" }, ":disabled": { "syntax": ":disabled", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:disabled" }, ":empty": { "syntax": ":empty", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:empty" }, ":enabled": { "syntax": ":enabled", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:enabled" }, ":first": { "syntax": ":first", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:first" }, ":first-child": { "syntax": ":first-child", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:first-child" }, ":first-of-type": { "syntax": ":first-of-type", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:first-of-type" }, ":fullscreen": { "syntax": ":fullscreen", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:fullscreen" }, ":future": { "syntax": ":future", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:future" }, ":focus": { "syntax": ":focus", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:focus" }, ":focus-visible": { "syntax": ":focus-visible", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:focus-visible" }, ":focus-within": { "syntax": ":focus-within", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:focus-within" }, ":has": { "syntax": ":has( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:has" }, ":host()": { "syntax": ":host( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:host()" }, ":host-context()": { "syntax": ":host-context( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:host-context()" }, ":hover": { "syntax": ":hover", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:hover" }, ":indeterminate": { "syntax": ":indeterminate", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:indeterminate" }, ":in-range": { "syntax": ":in-range", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:in-range" }, ":invalid": { "syntax": ":invalid", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:invalid" }, ":is": { "syntax": ":is( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:is" }, ":lang": { "syntax": ":lang( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:lang" }, ":last-child": { "syntax": ":last-child", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:last-child" }, ":last-of-type": { "syntax": ":last-of-type", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:last-of-type" }, ":left": { "syntax": ":left", "groups": [ "Pseudo-classes", "Selectors", "CSS Pages" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:left" }, ":link": { "syntax": ":link", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:link" }, ":local-link": { "syntax": ":local-link", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:local-link" }, ":not": { "syntax": ":not( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:not" }, ":nth-child": { "syntax": ":nth-child( [ of ]? )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:nth-child" }, ":nth-col": { "syntax": ":nth-col", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:nth-col" }, ":nth-last-child": { "syntax": ":nth-last-child( [ of ]? )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:nth-last-child" }, ":nth-last-col": { "syntax": ":nth-last-col", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:nth-last-col" }, ":nth-last-of-type": { "syntax": ":nth-last-of-type( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:nth-last-of-type" }, ":nth-of-type": { "syntax": ":nth-of-type( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:nth-of-type" }, ":only-child": { "syntax": ":only-child", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:only-child" }, ":only-of-type": { "syntax": ":only-of-type", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:only-of-type" }, ":optional": { "syntax": ":optional", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:optional" }, ":out-of-range": { "syntax": ":out-of-range", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:out-of-range" }, ":past": { "syntax": ":past", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:past" }, ":paused": { "syntax": ":paused", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:paused" }, ":placeholder-shown": { "syntax": ":placeholder-shown", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:placeholder-shown" }, ":playing": { "syntax": ":playing", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:playing" }, ":read-only": { "syntax": ":read-only", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:read-only" }, ":read-write": { "syntax": ":read-write", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:read-write" }, ":required": { "syntax": ":required", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:required" }, ":right": { "syntax": ":right", "groups": [ "Pseudo-classes", "Selectors", "CSS Pages" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:right" }, ":root": { "syntax": ":root", "groups": [ "Pseudo-classes", "Selectors", "CSS Pages" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:root" }, ":scope": { "syntax": ":scope", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:scope" }, ":target": { "syntax": ":target", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:target" }, "::target-text": { "syntax": "::target-text", "groups": [ "Pseudo-elements", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::target-text" }, ":target-within": { "syntax": ":target-within", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:target-within" }, ":user-invalid": { "syntax": ":user-invalid", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:user-invalid" }, ":user-valid": { "syntax": ":user-valid", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:user-valid" }, ":valid": { "syntax": ":valid", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:valid" }, ":visited": { "syntax": ":visited", "groups": [ "Pseudo-classes", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:visited" }, ":where": { "syntax": ":where( )", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:where" }, "::-moz-progress-bar": { "syntax": "::-moz-progress-bar", "groups": [ "Pseudo-elements", "Selectors", "Mozilla Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-moz-progress-bar" }, "::-moz-range-progress": { "syntax": "::-moz-range-progress", "groups": [ "Pseudo-elements", "Selectors", "Mozilla Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-moz-range-progress" }, "::-moz-range-thumb": { "syntax": "::-moz-range-thumb", "groups": [ "Pseudo-elements", "Selectors", "Mozilla Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-moz-range-thumb" }, "::-moz-range-track": { "syntax": "::-moz-range-track", "groups": [ "Pseudo-elements", "Selectors", "Mozilla Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-moz-range-track" }, "::-ms-browse": { "syntax": "::-ms-browse", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-browse" }, "::-ms-check": { "syntax": "::-ms-check", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-check" }, "::-ms-clear": { "syntax": "::-ms-clear", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-clear" }, "::-ms-expand": { "syntax": "::-ms-expand", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-expand" }, "::-ms-fill": { "syntax": "::-ms-fill", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-fill" }, "::-ms-fill-lower": { "syntax": "::-ms-fill-lower", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-fill-lower" }, "::-ms-fill-upper": { "syntax": "::-ms-fill-upper", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-fill-upper" }, "::-ms-reveal": { "syntax": "::-ms-reveal", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-reveal" }, "::-ms-thumb": { "syntax": "::-ms-thumb", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-thumb" }, "::-ms-ticks-after": { "syntax": "::-ms-ticks-after", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-ticks-after" }, "::-ms-ticks-before": { "syntax": "::-ms-ticks-before", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-ticks-before" }, "::-ms-tooltip": { "syntax": "::-ms-tooltip", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-tooltip" }, "::-ms-track": { "syntax": "::-ms-track", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-track" }, "::-ms-value": { "syntax": "::-ms-value", "groups": [ "Pseudo-elements", "Selectors", "Microsoft Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-ms-value" }, "::-webkit-progress-bar": { "syntax": "::-webkit-progress-bar", "groups": [ "Pseudo-elements", "Selectors", "WebKit Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-webkit-progress-bar" }, "::-webkit-progress-inner-value": { "syntax": "::-webkit-progress-inner-value", "groups": [ "Pseudo-elements", "Selectors", "WebKit Extensions" ], "status": "nonstandard" }, "::-webkit-progress-value": { "syntax": "::-webkit-progress-value", "groups": [ "Pseudo-elements", "Selectors", "WebKit Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-webkit-progress-value" }, "::-webkit-slider-runnable-track": { "syntax": "::-webkit-slider-runnable-track", "groups": [ "Pseudo-elements", "Selectors", "WebKit Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-webkit-slider-runnable-track" }, "::-webkit-slider-thumb": { "syntax": "::-webkit-slider-thumb", "groups": [ "Pseudo-elements", "Selectors", "WebKit Extensions" ], "status": "nonstandard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-webkit-slider-thumb" }, "::after": { "syntax": "/* CSS3 syntax */\n::after\n\n/* CSS2 syntax */\n:after", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::after" }, "::backdrop": { "syntax": "::backdrop", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::backdrop" }, "::before": { "syntax": "/* CSS3 syntax */\n::before\n\n/* CSS2 syntax */\n:before", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::before" }, "::cue": { "syntax": "::cue | ::cue( )", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::cue" }, "::cue-region": { "syntax": "::cue-region | ::cue-region( )", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::cue-region" }, "::first-letter": { "syntax": "/* CSS3 syntax */\n::first-letter\n\n/* CSS2 syntax */\n:first-letter", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::first-letter" }, "::first-line": { "syntax": "/* CSS3 syntax */\n::first-line\n\n/* CSS2 syntax */\n:first-line", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::first-line" }, "::grammar-error": { "syntax": "::grammar-error", "groups": [ "Pseudo-elements", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::grammar-error" }, "::marker": { "syntax": "::marker", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::marker" }, "::part": { "syntax": "::part( + )", "groups": [ "Pseudo-elements", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::part" }, ":picture-in-picture": { "syntax": ":picture-in-picture", "groups": [ "Pseudo-classes", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:picture-in-picture" }, "::placeholder": { "syntax": "::placeholder", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::placeholder" }, "::selection": { "syntax": "::selection", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::selection" }, "::slotted": { "syntax": "::slotted( )", "groups": [ "Pseudo-elements", "Selectors" ], "status": "standard", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::slotted" }, "::spelling-error": { "syntax": "::spelling-error", "groups": [ "Pseudo-elements", "Selectors" ], "status": "experimental", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::spelling-error" } }