body,h1,h2,h3,h4,h5,h6,dl,dt,dd,ul,ol,li,th,td,p,blockquote,pre,form,fieldset,legend,input,button,textarea,hr{margin:0;padding:0}
body,button,input,select,textarea{ font:12px/1.5 "宋体",arial, verdana, sans-serif}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal}
li{list-style:none}
fieldset,img{border:0}
table{border-collapse:collapse;border-spacing:0}
q:before,q:after{content:”}
button,input,select,textarea{font-size:100%}
legend{color:#000}
small{font-size:12px}
hr{border:none;height:1px}
a{text-decoration:none}
a:hover{text-decoration:underline}
.cle:after{content:".";display:block;height:0;clear:both;visibility:hidden}
.cle{ display:inline-block}
.cle{ display:block}
.clear {clear: both;}
摘抄自：http://www.cnblogs.com/hidepeng/archive/2011/03/22/1991242.html