Thu, 22 Jan 2015 13:21:57 +0100
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 <div style="background: repeating-radial-gradient(closest-side, black 0, black 50px, white 50px, white 100px); width: 400px; height: 400px;"></div>