coderef

:has-slottedLimited availability

The :has-slotted CSS pseudo-class matches <slot> elements where the fallback content is not shown. The pseudo-class matches any slotted content, including white space, text nodes, or elements.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
✕Not supportedup to 155
Current: 155
Edge
✕Not supportedup to 154
Current: 154
Firefox
1–135Not supported
136+Supportedsince Mar 4, 2025
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
✕Not supportedup to 155
Current: 155
Firefox Android
4–135Not supported
136+Supportedsince Mar 4, 2025
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Chrome, Edge, Safari, Chrome Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN: :has-slotted.

Feature detection

CSS · check before using
@supports selector(:has-slotted) {
  /* styles that use :has-slotted */
}

/* or in JavaScript */
if (CSS.supports("selector(:has-slotted)")) {
  // use it
}

Documentation (MDN)

Specification