margin-collapse-vrl-034.xht (2051B)
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 3 <html xmlns="http://www.w3.org/1999/xhtml"> 4 5 <head> 6 7 <title>CSS Writing Modes Test: 'vertical-rl' and margin collapsing - right margin of a block collapses with right margin of its first child</title> 8 9 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> 10 <link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#logical-direction-layout" title="7.4 Flow-Relative Mappings" /> 11 <link rel="match" href="../reference/ref-filled-green-100px-square.xht" /> 12 13 <!-- 14 Test adapted from 15 http://test.csswg.org/suites/css2.1/nightly-unstable/html4/margin-collapse-017.htm 16 17 " 18 The margin collapsing rules apply exactly with the block-start margin substituted for the top margin and the block-end margin substituted for the bottom margin. 19 " 20 --> 21 22 <meta content="ahem image" name="flags" /> 23 <meta name="assert" content="This test checks that, in a vertical-rl context, the right margin an in-flow block box collapses with its first in-flow block-level child's right margin if the element has no top border, no top padding, and the child has no clearance." /> 24 25 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> 26 <style type="text/css"><![CDATA[ 27 div 28 { 29 font: 25px/1em Ahem; 30 height: 4em; 31 } 32 33 div#wrapper 34 { 35 background: red url("support/margin-collapse-2em-space-wm-vert.png"); 36 border-right: green solid 1em; 37 width: 3em; 38 writing-mode: vertical-rl; 39 } 40 41 div#parent 42 { 43 margin-right: 2em; /* block-start margin */ 44 } 45 46 div#first-child 47 { 48 background-color: green; 49 margin-right: 2em; /* block-start margin of child */ 50 width: 1em; 51 } 52 ]]></style> 53 54 </head> 55 56 <body> 57 58 <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> 59 60 <div id="wrapper"> 61 <div id="parent"> 62 <div id="first-child"></div> 63 </div> 64 </div> 65 66 </body> 67 </html>