content-visibility-008.html (1081B)
1 <!doctype HTML> 2 <html class="reftest-wait"> 3 <meta charset="utf8"> 4 <title>CSS Content Visibility: hidden stops painting when added (composited with composited child)</title> 5 <link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org"> 6 <link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility"> 7 <link rel="match" href="container-ref.html"> 8 <meta name="assert" content="content-visibility subtrees stop painting when hidden is added"> 9 10 <script src="/common/reftest-wait.js"></script> 11 12 <style> 13 #container { 14 width: 150px; 15 height: 150px; 16 background: lightblue; 17 will-change: transform; 18 } 19 .hidden { 20 content-visibility: hidden; 21 } 22 #child { 23 width: 50px; 24 height: 50px; 25 background: red; 26 will-change: transform; 27 } 28 </style> 29 30 <div id=container> 31 Test fails if you can see this text or a red box. 32 <div id=child></div> 33 </div> 34 35 <script> 36 function runTest() { 37 const container = document.getElementById("container"); 38 container.classList.add("hidden"); 39 requestAnimationFrame(takeScreenshot); 40 } 41 42 window.onload = runTest; 43 </script> 44 </html>