| - |
| browser: > |
| Microsoft Edge |
| summary: > |
| Implement the [`:dir()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:dir) from Selectors Level 4 |
| upstream_bug: > |
| UserVoice#12299532 |
| origin: > |
| Bootstrap#19984 |
| |
| - |
| browser: > |
| Microsoft Edge |
| summary: > |
| Implement [sticky positioning](http://html5please.com/#position:sticky) from CSS Positioned Layout Level 3 |
| upstream_bug: > |
| UserVoice#6263621 |
| origin: > |
| Bootstrap#17021 |
| |
| - |
| browser: > |
| Microsoft Edge |
| summary: > |
| Implement the HTML5 [`<dialog>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog) |
| upstream_bug: > |
| UserVoice#6508895 |
| origin: > |
| Bootstrap#20175 |
| |
| - |
| browser: > |
| Firefox |
| summary: > |
| Fire a [`transitioncancel` event](https://developer.mozilla.org/en-US/docs/Web/Events/transitioncancel) when a CSS transition is canceled |
| upstream_bug: > |
| Mozilla#1264125 |
| origin: > |
| Mozilla#1182856 |
| |
| - |
| browser: > |
| Firefox |
| summary: > |
| Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class |
| upstream_bug: > |
| Mozilla#854148 |
| origin: > |
| Bootstrap#20143 |
| |
| - |
| browser: > |
| Firefox |
| summary: > |
| Implement the HTML5 [`<dialog>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog) |
| upstream_bug: > |
| Mozilla#840640 |
| origin: > |
| Bootstrap#20175 |
| |
| - |
| browser: > |
| Chrome |
| summary: > |
| Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class |
| upstream_bug: > |
| Chromium#304163 |
| origin: > |
| Bootstrap#20143 |
| |
| - |
| browser: > |
| Chrome |
| summary: > |
| Implement the [`:dir()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:dir) from Selectors Level 4 |
| upstream_bug: > |
| Chromium#576815 |
| origin: > |
| Bootstrap#19984 |
| |
| - |
| browser: > |
| Chrome |
| summary: > |
| Implement [sticky positioning](http://html5please.com/#position:sticky) from CSS Positioned Layout Level 3 |
| upstream_bug: > |
| Chromium#231752 |
| origin: > |
| Bootstrap#17021 |
| |
| - |
| browser: > |
| Safari |
| summary: > |
| Implement the [`:dir()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:dir) from Selectors Level 4 |
| upstream_bug: > |
| WebKit#64861 |
| origin: > |
| Bootstrap#19984 |
| |
| - |
| browser: > |
| Safari |
| summary: > |
| Implement the HTML5 [`<dialog>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog) |
| upstream_bug: > |
| WebKit#84635 |
| origin: > |
| Bootstrap#20175 |