css reset 样式

body,h1,h2,h3,h4,h5,h6,hr,p,dl,dt,dd,ul,ol,li,form,fieldset,legend,button,input,textarea,th,td{margin:0;padding:0;}
body,button,input,select,textarea{font:12px/1.5 arial,tahoma,'Microsoft Yahei',\5b8b\4f53}
body{background:#FFF;color:#666;}
h1,h2,h3,h4,h5,h6{font-size:100%;}
em,i{font-style:normal;}
fieldset,img{border:0;}
ul,ol,li{list-style:none;}
button,input,select,textarea{font-size:100%;outline:none}
textarea{resize:none;}
table{border-collapse:collapse;border-spacing:0;}
a{color:#666;text-decoration:none;outline:none;}
a:hover{color:#ff771c;text-decoration:underline;}
.clearfix:after{content:".";display:block;height:0;clear:both;visibility:hidden;}
.clearfix{zoom:1;}
.clear{clear:both;display:block;height:0;overflow:hidden;font-size:0;}
.hide{display:none;}
.w{width:990px;min-width:990px;margin:0 auto;}