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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Flexbox Test: gap - row and column gap</title>
<link rel="author" title="Adam Argyle" href="mailto:argyle@google.com">
<style>
section {
background-color: green;
block-size: 100px;
display: flex;
flex-wrap: wrap;
}
section > div{
background-color: grey;
width: calc(50% - 10px);
}
section > div:nth-child(1),
section > div:nth-child(3) {
margin-inline-end: 20px;
}
section > div:nth-child(3),
section > div:nth-child(4) {
margin-block-start: 40px;
}
</style>
<body>
<p>Test passes if there are <strong>40px horizontal green lines and 20px vertical green lines between boxes</strong>.</p>
<section>
<div></div>
<div></div>
<div></div>
<div></div>
</section>
</body>