<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#a { color: orange; }
#b { color: blue; }
</style>
</head>
<body>
<table border="10"><tr id="tr"><td id="td">
<p><span id="a">a</span><span id="b">b</span></p>
</td></tr></table>
</body>
</html>