| <!DOCTYPE html> |
| <link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org"> |
| <style> |
| #ancestry { display: flex; } |
| #keg { contain: block-size layout; display: flex; width: fit-content; } |
| @container (max-height: 200px) { |
| #target { width: 400px; } |
| } |
| @container (min-height: 400px) { |
| #target { width: 20px; } |
| } |
| </style> |
| <div id="ancestry"> |
| <div id="keg"> |
| <div id="target"> |
| <div style="width:50px;"></div> |
| </div> |
| </div> |
| </div> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| test(()=> { |
| ancestry.style.height = "100px"; |
| assert_equals(keg.offsetWidth, 400); |
| |
| ancestry.style.height = "300px"; |
| assert_equals(keg.offsetWidth, 50); |
| |
| ancestry.style.height = "500px"; |
| assert_equals(keg.offsetWidth, 20); |
| }, "block-size containment only"); |
| </script> |
