层叠式css，写好程序之后，怎么用浏览器浏览
@charset "utf-8";
/* CSS Document */
*{margin:0;padding:0;}
ul li{list-style:none;}
img{border:0;}
body{font:12px/1.5 Arial "微软雅黑";color:#666;}
a{color:#666;text-decoration:none;}
a:hover{text-decoration:underline;}
.layout{width:960px;margin:0 auto;overflow:hidden;}
/*header*/
.header{height:80px;}
.logo{width:250px;height:100px;float:left;}
.header-r{width:510px;float:right;}
