margin-collapse-143

Placement of out-of-flow object in elements that have been collapsed through

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 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 2 <html lang="en">
 3 <head>
 4   <title>CSS Test: Placement of out-of-flow object in elements that have been collapsed through</title>
 5   <link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch">
 6   <link rel="alternate" href="http://www.hixie.ch/tests/adhoc/css/box/block/margin-collapse/043.html" type="text/html">
 7   <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">
 8   <style type="text/css">
 9    .outer { border-top: solid white; border-bottom: solid 1em red; background: green; }
10    .top { height: 1em; background: white; }
11    .float { height: 1em; float: left; background: white; width: 100%; }
12    .bottom { margin-bottom: 1em; }
13   </style>
14  </head>
15  <body>
16   <p>There should be a single green band below, and no red anywhere.</p>
17   <div class="outer">
18    <div class="top"> <!-- 1em vertical white space --> </div>
19    <div class="bottom"> <!-- 1em bottom margin collapses to here -->
20     <div class="bottom"> <!-- 1em bottom margin collapses with above -->
21      <div class="float"> </div> <!-- overlaps the bottom border -->
22     </div> <!-- nothing here, bottom margin collapsed upwards -->
23    </div> <!-- nothing here, bottom margin collapsed upwards -->
24   </div> <!-- 1em bottom red border, coincident with white float above -->
25  
26 
27 
28 </body>
29 </html><!-- note. this test assumes that we accept the following proposed changes:
30      http://lists.w3.org/Archives/Member/w3c-css-wg/2003AprJun/0347.html
31   -->