| <!DOCTYPE html> |
| <link rel="help" href="https://drafts.csswg.org/css-position/"> |
| <link rel="match" href="absolute-pos-box-inside-fixed-pos-box-with-changing-height-ref.html"> |
| <meta name="assert" content="bottom anchored abs pos child moves when fixed pos containing block height changes."> |
| <style> |
| body { |
| margin: 0px; |
| } |
| #fixed { |
| left: 0px; |
| width: 100px; |
| height: 200px; |
| position: fixed; |
| } |
| .box { |
| position: absolute; |
| bottom: 0; |
| width: 50px; |
| height: 50px; |
| background: green; |
| } |
| .ref { |
| position: absolute; |
| width: 50px; |
| height: 50px; |
| left: 0px; |
| top: 250px; |
| background: red; |
| } |
| </style> |
| <div class=ref></div> |
| <div style="position: absolute"> |
| <div id=fixed> |
| <div class=box></div> |
| </div> |
| </div> |
| <script> |
| document.body.offsetTop; |
| fixed.style.height = "300px"; |
| </script> |
