css样式重置

/* 样式重置 */
body,h1,h2,h3,h4,h5,h6,p,dl,dd,ul,ol,form,input,textarea,th,td,select{ margin:0; padding:0;}
em{ font:normal;}
a{ text-decoration:none;}
li{ list-style:none;}
img{ border:0; vertical-align:top;}
table{ border-collapse:collapse;}
input,textarea{ outline:none;}
body{ font-size:12px; font-family:"微软雅黑";}

原文：http://www.cnblogs.com/juexin/p/4114459.html