Blitz - WPT: block-in-inline-negative-mb-collapses-with-positive-mt.html

wpt / css / CSS2 / box-display / block-in-inline-negative-mb-collapses-with-positive-mt.html

/css/CSS2/box-display/block-in-inline-negative-mb-collapses-with-positive-mt.html

<!DOCTYPE html>
<title>CSS Test: block-in-inline negative margin-bottom collapses with positive margin-top of following sibling</title>
<link rel="help" href="https://www.w3.org/TR/CSS21/visuren.html#anonymous-block-level">
<link rel="help" href="https://www.w3.org/TR/CSS21/box.html#collapsing-margins">
<link rel="match" href="block-in-inline-negative-mb-collapses-with-positive-mt-ref.html">
<meta name="assert" content="When a block-in-inline has negative margin-bottom and the following sibling has positive margin-top, the collapsed margin is positive_max - negative_max.">
<style>
.container { width: 100px; }
.first { width: 100px; height: 20px; margin-bottom: -20px; background: blue; }
.second { width: 100px; height: 20px; margin-top: 50px; background: green; }
</style>
<p>Blue rectangle, 30px gap (50 - 20), green rectangle.</p>
<div class="container">
    <span><div class="first"></div></span>
    <span><div class="second"></div></span>
</div>

/css/CSS2/box-display/block-in-inline-negative-mb-collapses-with-positive-mt-ref.html

<!DOCTYPE html>
<title>CSS Reference</title>
<style>
.container { width: 100px; }
.first { width: 100px; height: 20px; margin-bottom: -20px; background: blue; }
.second { width: 100px; height: 20px; margin-top: 50px; background: green; }
</style>
<p>Blue rectangle, 30px gap (50 - 20), green rectangle.</p>
<div class="container">
    <div class="first"></div>
    <div class="second"></div>
</div>