Source code

Revision control

Copy as Markdown

Other Tools

Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
.multicol {
column-count: 2;
column-gap: 0;
column-fill: auto;
inline-size: 100px;
block-size: 100px;
background: red;
}
.container {
border-block-start: 15px solid green;
border-block-end: 15px solid pink;
box-decoration-break: clone;
block-size: 70px;
}
.child {
block-size: calc(85px + 100px); /* 1st column + 2nd column */
background: green;
}
</style>
<!-- The container's content-box block-size is 70px, fitting exactly into the
first column. The child overflows the container, and get painted over the
container's block-end border in the first column. -->
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="multicol">
<div class="container">
<div class="child"></div>
</div>
</div>