<title>字间距属性 letter-spacing</title>
<style type="text/css">
h2{ letter-spacing:20px;}
h3 { letter-spacing:20px;}
</style>
</head>
<body>
<h2> letter spacing （字间距为正值 </h2>
<h3> letter spacing （字间距为负值 </h3>
</body>
</html>
<title>字间距属性 letter-spacing</title>
<style type="text/css">
h2{ letter-spacing:20px;}
h3 { letter-spacing:20px;}
</style>
</head>
<body>
<h2> letter spacing （字间距为正值 </h2>
<h3> letter spacing （字间距为负值 </h3>
</body>
</html>