LayoutTests/imported/w3c/web-platform-tests/css/css-contain/contain-paint-change-opacity.html

   1 <!DOCTYPE html>
   2 <html class="reftest-wait">
   3 <link rel="help" href="https://drafts.csswg.org/css-contain-2/#contain-property">
   4 <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
   5 <script src="/common/reftest-wait.js"></script>
   6 <script src="/common/rendering-utils.js"></script>
   7 <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
   8 <div style="width: 100px; background: red">
   9   <div id="container" style="contain: paint; opacity: 0.1">
  10     <div style="height: 100px; background: green; position: relative"></div>
  11   </div>
  12 </div>
  13 <script>
  14 waitForAtLeastOneFrame().then(() => {
  15   container.style.opacity = 1;
  16   takeScreenshot();
  17 });
  18 </script>
  19 </html>