devtools/client/inspector/boxmodel/test/doc_boxmodel_iframe2.html


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<!DOCTYPE html>
<p style="width:100px;height:100px;background:red;box-sizing:border-box">iframe 1</p>
<iframe src="data:text/html,<div style='width:400px;height:200px;background:yellow;box-sizing:border-box'>iframe 2</div>"></iframe>