| <!DOCTYPE html> |
| <link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org"> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/"> |
| |
| <p>There should be no red below.</p> |
| <div id="container" style="writing-mode:vertical-rl; overflow:auto; width:300px; height:300px;"> |
| <div style="width:300px; background:red;"></div> |
| <div style="width:400px; font-size:16px; line-height:25px;"> |
| <span id="displayMe" style="color:red; display:none;"> |
| FAIL<br>FAIL<br>FAIL<br>FAIL<br> |
| </span> |
| line<br> |
| </div> |
| <div id="displayMeToo" style="display:none; width:300px; background:red;"></div> |
| </div> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| test(()=> { |
| var container = document.getElementById("container"); |
| var displayMe = document.getElementById("displayMe"); |
| var displayMeToo = document.getElementById("displayMeToo"); |
| // Scroll the text container into view. |
| container.scrollLeft = 100; |
| displayMe.style.display = "inline"; |
| displayMeToo.style.display = "block"; |
| assert_equals(container.scrollLeft, 300); |
| }, "Line at edge of scrollport shouldn't jump visually when content is inserted before"); |
| </script> |
