| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> |
| |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| |
| <head> |
| |
| <title>CSS Test: margin collapsing - clear with child margin</title> |
| |
| <!-- |
| Inspired by |
| http://test.csswg.org/suites/css2.1/20110323/html4/c5525-fltmult-000.htm |
| --> |
| |
| <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> |
| <link rel="reviewer" title="Arron Eicholz" href="arronei(at)gmail.com" /> <!-- 2013-07-30 --> |
| <link rel="bookmark" href="http://lists.w3.org/Archives/Public/public-css-testsuite/2012Jan/0022.html" title="[RC6] c5525-fltmult-000 imprecise and failed by several browsers" /> |
| <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins" title="8.3.1 Collapsing margins" /> |
| <link rel="match" href="../reference/ref-filled-green-100px-square.xht" /> |
| |
| <meta name="assert" content="An element on which 'clear' is set to a value other than 'none' can have its own margin-top collapse with its first inflow block-level child as long as no line boxes, no clearance, no padding and no border separate them." /> |
| |
| <style type="text/css"><![CDATA[ |
| body {margin: 8px;} |
| |
| p {margin: 1em 0em;} |
| |
| div#overlapped-red |
| { |
| background-color: red; |
| height: 100px; |
| position: absolute; |
| width: 100px; |
| z-index: -1; |
| } |
| |
| div#floated-left |
| { |
| background-color: green; |
| color: green; |
| float: left; |
| font: 1em/1.25 serif; |
| padding: 15px; |
| /* |
| |
| 15px : padding-top |
| + |
| 20px : line box height |
| + |
| 15px : padding-bottom |
| ===== |
| 50px |
| |
| */ |
| width: 70px; |
| } |
| |
| div#cleared-left {clear: left;} |
| |
| div#child-of-cleared-left |
| { |
| background-color: green; |
| color: green; |
| height: 50px; |
| margin-top: 50px; |
| width: 100px; |
| } |
| |
| /* |
| The idea is to have div#cleared-left's margin-top collapse |
| with div#child-of-cleared-left's margin-top. The margin collapsing |
| should occur before calculating clearance. |
| */ |
| ]]></style> |
| |
| </head> |
| |
| <body> |
| |
| <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> |
| |
| <div id="overlapped-red"></div> |
| |
| <div id="floated-left">flt lef</div> |
| |
| <div id="cleared-left"> |
| <div id="child-of-cleared-left">chld clr</div> |
| </div> |
| |
| </body> |
| </html> |
