<!DOCTYPE html> <html class="reftest-wait"> <meta charset="utf-8"> <title>Selectors Level 4: focus-within</title> <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com"> <link rel="help" href="https://drafts.csswg.org/selectors-4/#focus-within-pseudo"> <link rel="match" href="focus-within-007-ref.html"> <meta name="assert" content="Checks that ':focus-within' can be used as universal selector."> <style> /* Suppress things that cannot be reproduced in the reference file */ :focus { outline: none; } html, body, div { border: solid 5px red; } /* Use blue to indicate that the user needs to pay attention. This element needs to be focused for the test to make sense. */ div { border-color: blue; } :focus-within { border-color: green; } </style> <p>Test passes if, when the element below is focused, it is surrounded by a green border, and HTML and BODY elements also have a green border. There must be no red or blue once it is focused.</p> <div id="focusme" tabindex="1">Focus this element</div> <script> var focusme = document.getElementById('focusme'); focusme.focus(); document.documentElement.classList.remove('reftest-wait'); </script> </html>