为什么我用文本编辑，网页打开后那个题目那儿是乱码？
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>布局</title>
<style type="text/css">
.body{margin:0;padding:0;}
.top{height:100px;background:blue;}
.main{width:800px;height:300px;background:#ccc;margin:0 auto}
.bottom{width:800px;height:100px;background:red;margin:0 auto}
</style>
</head>
<body>
<div class="top"></div>
<div class="main"></div>
<div class="bottom"></div>
</body>
</html>
