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<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8">
<title>Reference for reftest that checks whether WebM video with alpha is rendered with the correct stride</title>
<style>
.edgeCover {
position: absolute;
box-shadow: 0 0 0 4px magenta, inset 0 0 0 4px magenta;
}
</style>
<div style="position: relative">
<div class="edgeCover" style="background: red; left: 0; top: 0; width: 64px; height: 64px;"></div>
<div class="edgeCover" style="background: blue; left: 64px; top: 0; width: 64px; height: 64px;"></div>
<div class="edgeCover" style="background: yellow; left: 0; top: 64px; width: 64px; height: 64px;"></div>
<div class="edgeCover" style="background: lime; left: 64px; top: 64px; width: 64px; height: 64px;"></div>
<div class="edgeCover" style="background: black; left: 196px; top: 0; width: 16px; height: 334px;"></div>
</div>