Meta is dissapointed

<!DOCTYPE html>
<html>
<head>
<title>A blah</title>
<style type="text/css">

.commaseparated, .newlineseparated {
  display:block;
  padding:6px;
  margin:4px;
  width:130px;
}

.commaseparated {
  background-color:#DADADA;
  border:3px double #FFF;
}

.newlineseparated {
  background-color:#BABABA;
  border:3px double #FFF;
}

.commasepatated::selection, .commasepatated::-moz-selection {
  background-color:#8F0;
  color:#070;
}

.newlineseparated::selection {
  background-color:#8F0;
  color:#070;
}

.newlineseparated::-moz-selection {
  background-color:#8F0;
  color:#070;
}
</style>
</head>
<body>
When <b>::selection</b> and <b>::-moz-selection</b> are separated by <b>commas</b> [applied to the same group of styles]: <div class='commaseparated'>Highlight me!</div>
<br>
When <b>::selection</b> and <b>::-moz-selection</b> are separated by <b>new lines</b> [applied to their own groups of styles]: <div class='newlineseparated'>Highlight me!</div>
</body>
</html>