<!DOCTYPE html>
<html>
<head>
  <title>background-size: cover; box-decoration-break: clone</title>
  <style type="text/css">
@font-face
{
  font-family: Ahem;
  src: url(../fonts/Ahem.ttf);
}

#outer
{
  border: 1px solid black;
  width: 10em;
}
#ahem-lines
{
  font-family: Ahem;
  font-size: 32px;
  white-space: pre;
  background-image: url(blue-8x20-green-8x20.png);
  background-repeat: no-repeat;
  background-size: cover;
  box-decoration-break: clone;
}
</style>
</head>
<body>
<div id="outer">
<span id="ahem-lines">      <!-- EOL -->
        <!-- mix it up for clone --><!-- EOL -->
      <!-- EOL -->
      <!-- EOL -->
      </span></div>
</body>
</html>