| <!DOCTYPE html> |
| <title>CSS aspect-ratio: img block size with box-sizing</title> |
| <link rel="author" title="Mozilla" href="https://www.mozilla.org/"> |
| <link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio"> |
| <link rel="match" href="../../reference/ref-filled-green-100px-square.xht" /> |
| <style> |
| .border1 { |
| border-left: 10px solid green; |
| } |
| .border2 { |
| border-left: 15px solid green; |
| } |
| </style> |
| |
| <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> |
| |
| <!-- |
| 1st: A green rect 50x100. |
| border-left is 10x100 and the content box is 40x100. |
| We use 'aspect-ratio: auto && <ratio>', so the aspect-ratio works with |
| content-box dimensions always. The inline size of the content box is |
| (50px - 10px) = 40px, so the block size is 40px * 5/2 = 100px. |
| (note: width here is the inline size of border-box.) |
| |
| 2st: A green rect 25x100. |
| border-left is 15x100 and the content box is 10x100. |
| (note: width here is the inline size of content-box.) |
| |
| 3nd: A green rect 25x100. |
| border-left is 15x100 and the content box is 10x100 because we compute |
| the block size by aspect-ratio which works with border-box and so the |
| block size is 25px * 4 = 100. |
| (note: width here is the inline size of border-box.) |
| --> |
| <img class="border1" src="support/20x50-green.png" style="width: 50px; aspect-ratio: auto 1/1; box-sizing: border-box;" |
| ><img class="border2" src="support/20x50-green.png" style="width: 10px; aspect-ratio: 1/10; box-sizing: content-box;" |
| ><img class="border2" src="support/20x50-green.png" style="width: 25px; aspect-ratio: 1/4; box-sizing: border-box;"> |
