【a】
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
a {
font-weight: bold;
color: #ff0000;
text-decoration: none;
}
a:hover {
color: #FF9900;
text-decoration: underline;
background-color: #f9f0f0;
}
a:visited {
color: #990000;
}
</style>
</head>
<body>
<a href="">A</a>
<a href="">B</a>
<a href="">C</a>
</body>
</html>
