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+<!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: inherit applied on margin set with em</title>
+
+ <link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
+ <link rel="help" title="4.3.2 Length" href="http://www.w3.org/TR/CSS21/syndata.html#length-units" />
+ <link rel="help" title="6.2.1 The 'inherit' value" href="http://www.w3.org/TR/CSS21/cascade.html#value-def-inherit" />
+ <link rel="help" href="http://www.w3.org/TR/css-cascade-3/#inherit" />
+ <link rel="help" href="http://www.w3.org/TR/css-cascade-4/#inherit" />
+ <link rel="help" title="8.3 Margin properties" href="http://www.w3.org/TR/CSS21/box.html#margin-properties" />
+ <link rel="match" href="margin-em-inherit-001-ref.xht" />
+
+ <meta content="The 'em' unit is equal to the computed value of the 'font-size' property of the element on which it is used. When inherit keyword is used, the property takes the same computed value - a length value in this testcase - as the property for the element's parent." name="assert" />
+ <meta content="image" name="flags" />
+
+ <style type="text/css"><![CDATA[
+ body {margin: 8px;}
+
+ p
+ {
+ font: 1em/1.25 serif;
+ margin: 1em 0em;
+ }
+
+ div#grand-parent {width: 600px;}
+
+ div#parent
+ {
+ background-color: green;
+ border: white solid 6px;
+ /*
+ Such border prevents margin collapsing between
+ #parent's vertical margins and #child's vertical margins
+ */
+ font-size: 28px;
+ margin: 2em 3em 1em 4em; /* 56px 84px 28px 112px */
+ }
+
+ div#child
+ {
+ font-size: 40px;
+ margin: inherit;
+ /*
+ What is inherited is a computed length value: so
+ it is 56px 84px 28px 112px and not 80px 120px 40px 160px
+ */
+ }
+
+ div#abs-pos-overlapping-green
+ {
+ left: 238px;
+ position: absolute;
+ top: 174px;
+ }
+
+ /*
+ 8px (body's margin-left)
+ + 112px (#parent's margin-left)
+ + 6px (#parent's border-left)
+ + 112px (#child's margin-left)
+ ==================
+ 238px
+ */
+
+ /*
+ 16px (max(8px, 16px): body's margin-top collapses with p's margin-top)
+ + 20px (first line)
+ + 20px (second line)
+ + 56px (max(16px, 56px): p's margin-bottom collapses with #parent's margin-top)
+ + 6px (#parent's border-top)
+ + 56px (#child's margin-top)
+ ==================
+ 174px
+ */
+ ]]></style>
+
+ </head>
+
+ <body>
+
+ <p>Test passes if there is a filled green<br />
+ rectangle and if there is no red.</p>
+
+ <div id="grand-parent">
+ <div id="parent">
+ <div id="child"><img src="support/100x100-red.png" alt="Image download support must be enabled" /></div>
+ </div>
+ </div>
+
+ <div id="abs-pos-overlapping-green"><img src="support/swatch-green.png" width="100" height="100" alt="Image download support must be enabled" /></div>
+
+ </body>
+</html>