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<!DOCTYPE html>
<html>
<title>CSS aspect-ratio: canvas with aspect-ratio, object-fit and object-position</title>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="This test verifies aspect-ratio affects the canvas element's ratio, but not the canvas content's ratio.">
<style>
canvas {
width: 100px;
aspect-ratio: 1/3;
object-fit: contain;
object-position: top left;
}
</style>
<script>
window.onload = function() {
const canvas = document.querySelector('canvas');
const ctx = canvas.getContext('2d');
ctx.fillStyle = 'green';
ctx.fillRect(0, 0, 200, 200);
}
</script>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<canvas width=200 height=200></canvas>
</html>
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