<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>CSS Test: Absolutely positioned non-replaced elements with left, width, right and margin-left not auto</title>
<link rel="author" title="Microsoft" href="http://www.microsoft.com/">
<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2012-08-31 -->
<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">
<meta name="flags" content="ahem">
<meta name="assert" content="If 'left', 'width', 'right' and 'margin-left' are all not 'auto' and 'margin-right' is 'auto', then solve the equation for 'margin-right'.">
<style type="text/css">
#containingblock
{
border: solid black;
direction: rtl;
height: 200px;
position: relative;
width: 300px;
}
div div
{
/* left + margin-left + border-left-width + padding-left + width + padding-right + border-right-width + margin-right + right = width of containing block */
/* 100px + 100px + 0 + 0 + 100px + 0 + 0 + solve + 100px = 300px */
background: red;
color: blue;
font: 100px/1 Ahem;
left: 100px;
margin-left: 100px;
margin-right: auto; /* value is solved to -100px */
position: absolute;
right: 100px;
width: 100px;
}
</style>
</head>
<body>
<p>Test passes if a filled blue square is in the <strong>upper-right corner</strong> of the black rectangle and there is <strong>no red</strong>.</p>
<div id="containingblock">
<div>X</div>
</div>
</body>
</html>