<p>This doesn't seem to work for me in Firefox. I get line breaks between the heading on the left and the content on the right:</p>

<p><a href="https://f.cloud.github.com/assets/147741/463790/b6c65f6e-b59d-11e2-8eb2-4dcd5fe40402.png" target="_blank"><img src="https://f.cloud.github.com/assets/147741/463790/b6c65f6e-b59d-11e2-8eb2-4dcd5fe40402.png" alt="screenshot from 2013-05-05 17 04 20" style="max-width:100%;"></a></p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br>Reply to this email directly or <a href='https://github.com/openstreetmap/openstreetmap-website/pull/256#issuecomment-17453951'>view it on GitHub</a>.<img src='https://github.com/notifications/beacon/uTRSc6ihLa7Shf84BpiOpm33EWhsUlXv8TZXooGpq1SDW834zoMTlwXBA-tHE4hW.gif' height='1' width='1'></p>