Blitz - WPT: absolute-non-replaced-height-005.xht

wpt / css / CSS2 / positioning / absolute-non-replaced-height-005.xht

/css/CSS2/positioning/absolute-non-replaced-height-005.xht

<!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, 'margin-bottom' set to '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-height" />
		<link rel="match" href="absolute-non-replaced-height-003-ref.xht" />

        <meta name="assert" content="When 'top', 'bottom' and 'height' are all are not 'auto', 'margin-top' is not 'auto' and 'margin-bottom' is 'auto'. Then 'margin-bottom' becomes the remainder of the height of the containing box." />
        <style type="text/css">
            #div1
            {
                border: solid black;
                height: 3in;
                position: relative;
                width: 3in;
            }
            div div
            {
                background: blue;
                bottom: 0.5in;
                height: 1in;
                margin-bottom: auto;
                margin-top: 0.5in;
                position: absolute;
                top: 0.5in;
                width: 100%;
            }

		/*

		0.5in : top
	+
		0.5in : margin-top
	+
		0 : border-top-width
	+
		0 : padding-top
	+
		1in: height
	+
		0 : padding-bottom
	+
		0 : border-bottom-width
	+
		auto (solve) : margin-bottom
	+
		0.5in : bottom
	=============
		3.0in : height of containing block

	So, margin-bottom must use 0.5in so that the equation gets balanced.

		*/


        </style>
    </head>
    <body>
        <p>Test passes if a blue rectangle is <strong>vertically centered</strong> in an hollow black square.</p>
        <div id="div1">
            <div></div>
        </div>
    </body>
</html>

/css/CSS2/positioning/absolute-non-replaced-height-003-ref.xht

<!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 Reftest Reference</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />

  <style type="text/css"><![CDATA[
  div
  {
  border: black solid medium;
  height: 288px;
  width: 288px;
  }

  img
  {
  height: 96px;
  vertical-align: top;
  width: 100%;
  }
  ]]></style>

 </head>

 <body>

  <p>Test passes if a blue rectangle is <strong>vertically centered</strong> in an hollow black square.</p>

  <div><img src="support/1x1-white.png" alt="Image download support must be enabled" /><img src="support/blue15x15.png" alt="Image download support must be enabled" /></div>

 </body>
</html>