| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS margin-trim: block trim 001</title> |
| <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"> |
| <link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html"> |
| <meta name="assert" content="block should trim block start and end margins for block-level first child"> |
| <style> |
| .container { |
| background-color: green; |
| width: 100px; |
| margin-trim: block; |
| } |
| .outer { |
| background-color: green; |
| width: 100px; |
| height: 50px; |
| } |
| .child { |
| margin-top: 50px; |
| margin-bottom: 50px; |
| height: 50px; |
| } |
| </style> |
| </head> |
| <body> |
| <p>Test passes if there is a filled green square.</p> |
| <div class="container"> |
| <div class="child"></div> |
| </div> |
| <div class="outer"></div> |
| </body> |
| </html> |