<!DOCTYPE html>

<p>Test PASS if you see two adjacent iframes with a 50x50 green square.</p>

<iframe height="120px" width="300px" srcdoc="
     <div style='background: green;  width: 50px; height: 50px; margin-left: 100px;'></div>
     ">
</iframe>

<iframe height="120px" width="300px" srcdoc="
     <div style='background: green; width: 50px; height: 50px; margin-left: 134px;'></div>
     ">
</iframe>