HTML5 Please

border-image

Safe to use with fallbackcss

All main browsers support this unprefixed.

Verdict
Safe to use
Category
CSS features
Browser support
Can I Use
Works in
all modern browsers

Should you use border-image in 2026?

You should let this fall back to either a normal solid border or no border at all, depending on whether a border is essential for readability. We recommend that you avoid polyfills.

There were some syntax changes (requiring the fill keywords) that may catch you off-guard; David Baron's border-image post describes the best course of action.

Polyfills and fallbacks

Progressive enhancement works well here: browsers without support degrade gracefully, so a dedicated polyfill is usually unnecessary.