| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| |
| body { height: 4000px; margin: 0; } |
| #fixed, #content { width: 200px; height: 100px; } |
| #fixed { position: fixed; left: 100px; top: 50px; } |
| #before { height: 50px; } |
| #content { margin-top: 100px; } |
| |
| </style> |
| <div id="fixed">fixed</div> |
| <div id="before"></div> |
| <div id="content">content</div> |
| <script> |
| |
| // Tests that the anchor selection algorithm skips fixed-positioned elements. |
| |
| test(() => { |
| document.scrollingElement.scrollTop = 100; |
| document.querySelector("#before").style.height = "100px"; |
| assert_equals(document.scrollingElement.scrollTop, 150); |
| }, "Fixed-position header."); |
| |
| </script> |
