| <!DOCTYPE html> |
| <html class="reftest-wait"> |
| <meta charset="utf-8"> |
| <title>CSS Overflow: -webkit-line-clamp display invalidation test</title> |
| <link rel="author" title="Andreu Botella" href="mailto:[email protected]"> |
| <link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp"> |
| <link rel="match" href="reference/webkit-line-clamp-001-ref.html"> |
| <meta name="assert" content="-webkit-line-clamp needs a specified value of `display: -webkit-box`, but the computed value is set to `display: flow-root`. This test checks that changing the specified value from `-webkit-box` to `flow-root` makes the box no longer a line-clamp container."> |
| <script src="/common/reftest-wait.js"></script> |
| <style> |
| .clamp { |
| display: -webkit-box; |
| -webkit-box-orient: vertical; |
| -webkit-line-clamp: 4; |
| overflow: hidden; /* can be removed once implementations update their old -webkit-line-clamp implementations */ |
| font: 16px / 32px serif; |
| white-space: pre; |
| background-color: yellow; |
| } |
| </style> |
| <div class="clamp">Line 1 |
| Line 2 |
| Line 3 |
| Line 4 |
| Line 5</div> |
| |
| <script> |
| requestAnimationFrame(() => { |
| requestAnimationFrame(() => { |
| // When `display: -webkit-box` is present with -webkit-line-clamp, its |
| // computed value becomes `display: flow-root`, but the -webkit-line-clamp |
| // behavior needs `-webkit-box` as the specified value. |
| const clampEl = document.querySelector(".clamp"); |
| clampEl.style.display = getComputedStyle(clampEl).display; |
| takeScreenshot(); |
| }); |
| }); |
| </script> |
