| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Test: Abspos table centered in both axes with auto margins</title> |
| <link rel="author" title="Daniel Holbert" href="mailto:[email protected]"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1480636"> |
| <link rel="help" href="https://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width"> |
| <meta name="assert" content="An absolutely-positioned fixed-size table should resolve auto margins the same way that a similarly-sized block would."> |
| <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> |
| <style> |
| .container { |
| /* I've chosen this position/size so that a 100px child element that's |
| centered within us will be placed at our "normal" position (where our |
| top-left corner would be, in the absence of relative positioning), so we |
| can use the simple filled-green-100px-square reference case. */ |
| position: relative; |
| left: -30px; |
| top: -30px; |
| width: 160px; |
| height: 160px; |
| } |
| .target { |
| display: block; |
| background: red; |
| } |
| .table { |
| display: table; |
| background: green; |
| } |
| .centered { |
| position: absolute; |
| width: 100px; |
| height: 100px; |
| inset: 0; |
| margin: auto; /* use auto margins for centering */ |
| } |
| </style> |
| <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> |
| <div class="container"> |
| <!-- We're essentially just comparing the position of the block ("target") |
| and the table. We expect them to be placed at precisely the same spot, |
| so no red should be visible. --> |
| <div class="centered target"></div> |
| <div class="centered table"></div> |
| </div> |
