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<!DOCTYPE html>
<html>
<meta charset="utf-8">
<title>CSS Multi-column Layout Test: Test a overflow:hidden and position:absolute multi-column container on button works with a column-span:all child and position:absolute boxes</title>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-span">
<link rel="match" href="multicol-span-all-button-002-ref.html">
<meta name="assert" content="This test checks the page is rendered correctly for a overflow:hidden and position:absolute button multi-column container with a column-span:all child and position:absolute boxes.">
<style>
button {
column-count: 3;
column-rule: 6px solid;
width: 400px;
padding: 1em;
overflow: hidden;
position: absolute;
}
h3 {
column-span: all;
outline: 1px solid blue;
}
a {
position: absolute;
width: 1em;
height: 1em;
background-color: blue;
}
</style>
<button>
<div>block1</div><div>block2</div><a></a>
<h3>spanner<a></a></h3>
<div>block3</div><div>block4</div><a></a>
</button>
</html>
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