The Tor Browser: layout/reftests/border-radius/clipping-and-zindex-1.html@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!DOCTYPE HTML>

     2 <title>Test for z-index relationship to border-radius clipping of overflow</title>

     3 <style>

     5 #one { position: absolute; z-index: 2; background: blue;

     6        top: 50px; left: 50px; width: 100px; height: 100px }

     8 #twoouter { position: absolute; border-radius: 15px; overflow: hidden;

     9             top: 25px; left: 75px; width: 100px; height: 100px }

    10 #twoinner { position: relative; z-index: 1; height: 100px; background: fuchsia }

    12 #three { position: absolute; z-index: 0; background: yellow;

    13          top: 75px; left: 100px; width: 100px; height: 100px }

    15 </style>

    17 <div id="one"></div>

    18 <div id="twoouter"><div id="twoinner"></div></div>

    19 <div id="three"></div>

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