layout/reftests/css-valuesandunits/unit-rem-ref.html

   1 <style>
   2 :root { font-size: 20px }
   3 body { font-size: 25px }
   4 div {
   5   font-size: 30px;
   6   width: 300px;
   7 }
   8 #a {
   9   border-bottom: 1px solid #f00;
  10 }
  11 </style>
  12
  13 <body>Level 1<div id=a>Level 2<div id=b>Level 3</div></div></body>