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<!doctype html>
<title>CSS test reference</title>
<style>
body { margin: 0 }
</style>
<div style="width: 200px; height: 10px; background-color: blue; margin: 10px"></div>
<!doctype html>
<title>CSS test reference</title>
<style>
body { margin: 0 }
</style>
<div style="width: 200px; height: 10px; background-color: blue; margin: 10px"></div>