| <!DOCTYPE html> |
| <title>Tests the calculation of negative auto margins of absolutely positioned element</title> |
| <link rel="help" href="https://drafts.csswg.org/css-position/#abspos-margins"> |
| <link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1492323"> |
| <link rel="author" href="mailto:[email protected]"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/check-layout-th.js"></script> |
| <style> |
| .cb { |
| position: relative; |
| width: 400px; |
| height: 400px; |
| outline: 1px dashed black; |
| } |
| |
| .target { |
| writing-mode: vertical-lr; |
| position: absolute; |
| background: green; |
| width: calc(100% - 100px); |
| height: calc(100% - 100px); |
| inset: 100px; |
| margin: auto; |
| } |
| </style> |
| |
| <body onload="checkLayout('.target')"> |
| <div class="cb"> |
| <div class="target" |
| data-expected-margin-top="-50" data-expected-margin-bottom="-50" |
| data-expected-margin-left="0" data-expected-margin-right="-100"></div> |
| </div> |
| </body> |
