| <!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: 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'." /> | 
 |         <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> | 
 |         <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> |