Open and closed selectors
The :open and :closed CSS pseudo-classes match elements that have open and closed states, like <details, <dialog>, or <select>, based on their state.
Status
Limited availability
MDN documentation
Specifications
Browser support
- Chrome ❌
- Chrome Android ❌
- Edge ❌
- Firefox ❌ Vendor position : positive
- Firefox for Android ❌ Vendor position : positive
- Safari ❌ Vendor position : support
- Safari on iOS ❌ Vendor position : support
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