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<!DOCTYPE html>
<html>
<style>
.grid {
display: grid;
grid-auto-flow: dense;
grid-auto-columns: min-content;
grid-template-rows: repeat(4, 50px);
width: 170px;
}
</style>
<body>
<p>Ensure that dense-packing correctly iterates through all possible track openings to find an opening span. Item that should be placed into opening is yellow.</p>
<div class="grid">
<div style="background: aquamarine; width: 60px; grid-row: 4;" >
1
</div>
<div style="background: blue; width: 40px; grid-row: 3;" >
2
</div>
<div style="background: blueviolet; width: 20px; grid-row: 2;">
3
</div>
<div style="background: lightsteelblue; width: 60px; grid-row: 1;">
6
</div>
<div style="background: lightblue; width: 10px; grid-row: 3 / span 2;">
4
</div>
<div style="background: lightskyblue; grid-row: 1; width: 30px; grid-row: 4;">
5
</div>
<div style="background: aqua; width: 20px; grid-row: 1 / span 4;">
7
</div>
<div style="background: yellow; width: 10px; grid-row: span 3;">
8
</div>
</div>
</body>
</html>