:host-context()
The :host-context() CSS pseudo-class selects the containing element of the shadow tree in which it is used if that element or an ancestor matches the provided selector.
Overview
The :host-context() CSS pseudo-class selects the containing element of the shadow tree in which it is used if that element or an ancestor matches the provided selector.
Browser support
| Feature | Desktop | Mobile | ||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Safari | Chrome Android | Safari iOS | |
:host-context Deprecated | 54 | 79 | | | 54 | |
1+Supported (version) Not supported ※Has note Sub-feature descriptions sourced from MDN Web Docs (CC BY-SA 2.5)
Syntax
CSS
:host-context(.dark-theme) {
background: #333;
color: #fff;
}
:host-context([dir='rtl']) {
direction: rtl;
}Live demo
Use cases
Using :host-context()
The :host-context() CSS pseudo-class selects the containing element of the shadow tree in which it is used if that element or an ancestor matches the provided selector.
Cautions
- Limited browser support. Check compatibility before use.
Accessibility
- Make sure visual changes are conveyed appropriately to assistive technology.
Related links
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