/*style reset*/
body,ul,p,h1,h2,h3,h4,h5,h6,dl,dd,form,input,textarea,select{padding:0; margin:0;font:12px/1em "宋体";}
li{list-style:none;}
img{border:none;vertical-align:top;}
a{text-decoration:none;}
.clearfix{*zoom:1;}
.clearfix:after{
content: "";
display: block;
clear: both;
}
.fl{float:left; _display:inline;}
.fr{float:right; _display:inline;}
转自：http://www.cnblogs.com/shiyou00/p/5522373.html
css常用公共样式
原文：http://www.cnblogs.com/sweeeper/p/6106239.html
