<meta charset="utf-8">

<title>CSS Multi-column Layout Test: Test the column rules' block-size with nested balancing multicol container</title>

<link rel="author" title="Ting-Yu Lin" href="mailto:[email protected]">

<link rel="author" title="Mozilla" href="https://www.mozilla.org/">

<link rel="help" href="https://drafts.csswg.org/css-multicol-1/#cf">

<link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-gaps-and-rules">

<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/2309">

<link rel="match" href="multicol-rule-nested-balancing-001-ref.html">

<meta name="assert" content="This test verifies that the column-rules are extended to the content block-end edges of their corresponding inner and outer multicol container.">

<style>

.outer {

column-count: 2;

column-rule: 6px solid black;

width: 400px;

height: 250px;

}

.inner {

column-count: 2;

column-rule: 3px solid gray;

height: 200px;

}

.outer-block {

background-color: lightgreen;

height: 200px;

}

.inner-block {

background-color: lightblue;

height: 300px;

}

</style>

<article class="outer">

<div class="outer-block"></div>

<article class="inner">

<div class="inner-block"></div>

</article>

</article>