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<!doctype html>
<!--
Any copyright is dedicated to the Public Domain.
-->
<title>Example of rule image with animated container size</title>
<style>
html,body {
color:black; background-color:white; font:20px/1 monospace;
}
@keyframes w {
0%, 33% { width:200px }
33%, 50% { width:400px }
50%, 100% { width:200px }
}
@keyframes h {
0%, 33% { height:200px }
33%, 50% { height:300px }
50%, 100% { height:200px }
}
.grid {
display: inline-grid;
grid-template-columns: repeat(3, 50px);
gap: 16px;
width: 200px;
height: 240px;
place-content: space-around;
animation: w 5s infinite, h 5s infinite;
column-rule: 16px solid blue;
column-rule-image: url(v-diagonal-blue-16.png) 16;
column-rule-extent: segment;
column-rule-align: rule-center;
column-rule-longitudinal-inset: -8px;
row-rule: 16px solid purple;
row-rule-image: url(h-diagonal-blue-16.png) 16;
row-rule-extent: segment;
row-rule-align: rule-center;
row-rule-longitudinal-inset: -8px;
border: 2px solid;
margin-right: 15px;
margin-bottom: 30px;
background: lightgrey;
}
x {
block-size: 48px;
background: grey;
}
x:nth-child(2), x:nth-child(6) {
grid-column: span 2;
}
</style>
<div class="grid test1"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x><x>6</x><x>7</x></div>