<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<style type="text/css">
.one,#two {
color:yellow;
}
</style>
</head>
<body>
<!--
选择器分组:
语法: 选择器1,选择器2...... {
属性键:属性值;
}
-->
<p class="one" >itcast传智播客</p>
<p id="two" >itcast传智播客</p>
<p>itcast传智播客</p>
<p class="one" >itcast传智播客</p>
<h1 class="one" >itcast传智播客</h1>
</body>
</html>