Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/css/css-anchor-position/position-try-invalid-anchor-crash.html 

<!DOCTYPE html>
<link rel=help href="https://drafts.csswg.org/css-anchor-1/#fallback">
<style>
@position-try --f1 { top: 50px; }
</style>
<div style="position: absolute; position-anchor: --x; position-try-fallbacks: --f1">INVALID ANCHOR</div>