| { |
| "css": { |
| "selectors": { |
| "before": { |
| "__compat": { |
| "description": "<code>::before</code>", |
| "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::before", |
| "spec_url": "https://drafts.csswg.org/css-pseudo/#generated-content", |
| "support": { |
| "chrome": [ |
| { |
| "version_added": "1" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "1" |
| } |
| ], |
| "chrome_android": "mirror", |
| "edge": [ |
| { |
| "version_added": "12" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "12" |
| } |
| ], |
| "firefox": [ |
| { |
| "version_added": "1.5", |
| "notes": [ |
| "Before Firefox 57, Firefox had a bug where <code>::before</code> pseudo-elements were still generated, even if the <a href='https://developer.mozilla.org/docs/Web/CSS/content'><code>content</code></a> property value were set to <code>normal</code> or <code>none</code>.", |
| "Before Firefox 3.5, only the CSS level 2 behavior of <code>:before</code> was supported, which disallowed <a href='https://developer.mozilla.org/docs/Web/CSS/position'><code>position</code></a>, <a href='https://developer.mozilla.org/docs/Web/CSS/float'><code>float</code></a>, <code>list-style-*</code> and some <code>display</code> properties." |
| ] |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "1" |
| } |
| ], |
| "firefox_android": [ |
| { |
| "version_added": "4", |
| "notes": "Before Firefox 57, Firefox had a bug where <code>::before</code> pseudo-elements were still generated, even if the <a href='https://developer.mozilla.org/docs/Web/CSS/content'><code>content</code></a> property value were set to <code>normal</code> or <code>none</code>." |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "4" |
| } |
| ], |
| "ie": [ |
| { |
| "version_added": "9" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "8" |
| } |
| ], |
| "oculus": "mirror", |
| "opera": [ |
| { |
| "version_added": "7" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "4" |
| } |
| ], |
| "opera_android": [ |
| { |
| "version_added": "10.1" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "10.1" |
| } |
| ], |
| "safari": [ |
| { |
| "version_added": "4" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "4" |
| } |
| ], |
| "safari_ios": [ |
| { |
| "version_added": "3" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "3" |
| } |
| ], |
| "samsunginternet_android": "mirror", |
| "webview_android": [ |
| { |
| "version_added": "≤37" |
| }, |
| { |
| "alternative_name": ":before", |
| "version_added": "≤37" |
| } |
| ] |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| }, |
| "animation_and_transition_support": { |
| "__compat": { |
| "description": "Animation and transition support", |
| "support": { |
| "chrome": { |
| "version_added": "26" |
| }, |
| "chrome_android": "mirror", |
| "edge": { |
| "version_added": "12" |
| }, |
| "firefox": { |
| "version_added": "4" |
| }, |
| "firefox_android": "mirror", |
| "ie": { |
| "version_added": false |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": false |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
