| <!DOCTYPE html> |
| <html> |
| <head> |
| <link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com"> |
| <link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-block"> |
| <meta name="assert" content="self-collapsing items at block start should have margins trimmed along with first non self-collapsing child block-start margins"> |
| <style> |
| container { |
| display: block; |
| margin-trim: block; |
| border: 1px solid black; |
| margin-block-start: 10px; |
| } |
| item { |
| display: block; |
| inline-size: 50px; |
| background-color: green; |
| } |
| .collapsed { |
| margin-block-start: 50px; |
| block-size: 0px |
| } |
| </style> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/check-layout-th.js"></script> |
| </head> |
| <body onload=" checkLayout('container, item');"> |
| <container data-expected-margin-top="10"> |
| <item data-expected-margin-top="0" class="collapsed"> |
| <item data-expected-margin-top="0" class="collapsed"></item> |
| </item> |
| <item data-expected-margin-top="0" style="margin-block: 40px"> |
| <item data-expected-margin-top="0" data-expected-margin-bottom="0" class="collapsed"></item> |
| <item data-expected-margin-top="0" style="margin-top: 30px;"> |
| <item data-expected-margin-top="0" style="margin-block-start: 100px; height: 50px;"></item> |
| </item> |
| </item> |
| </container> |
| </body> |
| </html> |
