Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/css/css-conditional/container-queries/fieldset-legend-change-ref.html 

<!doctype html>
<title>CSS Test Reference</title>
<p>Pass if the rendered legend below is "PASS"</p>
<fieldset style="width:400px"><legend>PASS</legend></fieldset>