Blitz - WPT: margin-collapse-with-indefinite-block-size-005.html

wpt / css / css-sizing / margin-collapse-with-indefinite-block-size-005.html

/css/css-sizing/margin-collapse-with-indefinite-block-size-005.html

<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Oriol Brufau" href="obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css2/#collapsing-margins">
<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#behave-auto">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#stretch-fit-sizing">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="
  According to CSS2, the bottom margin of a block container can collapse
  with the bottom margin of its last in-flow child if `height` computes
  to `auto`.

  However, according to CSS Sizing, that was 'legacy spec prose' and
  should be interpreted as 'behaves as `auto`'.

  Therefore, an indefinite `stretch` in the preferred block size property
  shouldn't prevent margin collapse, because it behaves as `auto`.
">

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="width: 100px; height: stretch; background: red">
  <div style="height: 100px; margin-bottom: 100px; background: green"></div>
</div>

/css/reference/ref-filled-green-100px-square.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
  {
  background-color: green;
  height: 100px;
  width: 100px;
  }
  ]]></style>
 </head>
 <body>
  <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
  <div></div>
 </body>
</html>