样式初始化

body,ol,ul,h1,h2,h3,h4,h5,h6,p,th,td,dl,dd{
    margin: 0;
    padding: 0;
}
body{
    font-size: 12px; font-family:'Microsoft yahei';
}
li{list-style: none}
a{text-decoration: none;}
i{display: block}
img{
    border: none;
    vertical-align: middle;

}
.clear:after{
    content:"";
    height: 0;
    visibility: hidden;
    display: block;
    clear: both;
}