HTML5 Please

style[scoped]

Avoidcss

The scoped attribute on a style element was meant to limit its rules to a single subtree. Browsers removed it and the feature was dropped, so avoid it and scope styles with a build step, CSS modules, or the cascade layers and :where techniques available today.

Verdict
Avoid
Category
CSS features
Browser support
Can I Use
Works in
all modern browsers

Should you use style[scoped] in 2026?

Scoped stylesheets are still in active development. Firefox 21 now includes this feature, but no other major browser currently supports it out-the-box.