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Unprefix box-decoration-break #1391
Description
Description
Autoprefixer and equivalent tools are downloaded tens of millions of times every week. Safari Technology Preview recently unprefixed the user-select property as part of Interop 2026. That leaves box-decoration-break as one of the last remaining CSS properties to require a prefix (together with initial-letter, stretch and line-clamp). Unprefixing this property would enable developers to simplify their build.
Specification
https://drafts.csswg.org/css-break/#break-decoration
web-feature
https://web-platform-dx.github.io/web-features-explorer/features/box-decoration-break/
Test Links
https://wpt.fyi/results/css/css-break?label=master&label=experimental&aligned&q=box-decoration-break
Additional Signals
This was previously suggested for inclusion in Interop 2024 and Interop 2025
WebKit bug
WebKit standards position
In Chrome this property was unprefixed in 2024
Chris Coyier listed this as one of his top 4 most wanted features in this blog post.
Activity
github-actions commentedon Sep 13, 2026
This comment was automatically generated based on the information you provided. Please don't edit it.
Below is additional information about the web feature (from the web-features project) which is referenced in your proposal.
If this doesn't accurately correspond to your proposal, please update your initial comment to include
web-features: <feature-id>.To find feature IDs, use the web-features explorer.
Feature box-decoration-break
box-decoration-breakCSS property sets whether box decorations, such as borders or backgrounds, of an element divided across a page, column, or region wraps each fragment or splits across the break.box-decoration-breakCSS property