body,ul,ol,li,p,div,h1,h2,h3,h4,h5,h6,form,em,i,fieldset,table,td,img,dl,dt,dd,input{ margin: 0; padding: 0;}
body{ font-size: 12px;}
img{ border: none;}
li{ list-style: none;}
em,i{ font-style: normal;}
input,select,textarea{ outline: none;}
textarea{ resize: none;}
a{ text-decoration: none;}
/*清浮动*/
.clearfix:after{ content: "."; display: block; clear: both; height: 0; visibility: hidden;}
.clearfix{ zoom: 1;}