<!DOCTYPE html>
<title>Definite sizes with fixed flex-basis</title>
<link rel="author" title="David Grogan" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#definite-sizes">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht" />
<meta name="assert" content="In a column flexbox, the height of a fully inflexible item with fixed flex-basis is definite even when the heights of the item and the container are indefinite." />
<style>
x-flexbox {
display: flex;
flex-direction: column;
}
x-item {
flex: 0 0 100px;
}
x-item>div {
width: 100px;
height: 100%;
background: green;
}
#reference-overlapped-red {
position: absolute;
background-color: red;
width: 100px;
height: 100px;
z-index: -1;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div id="reference-overlapped-red"></div>
<x-flexbox>
<x-item>
<div></div>
</x-item>
</x-flexbox>
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