css 可重用部分

body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,td,img,div,dl,dt,dd,input{margin:0;padding:0;}
body{font-size:12px;}
img{border:none;}
ul,ol{list-style:none;}
input,select,textarea{outline:none; border:none; background:#FFF;}
textarea{resize:none;}
a{text-decoration:none;}
fl{float:left}
fr{float:right}

.clearfix:after{content:"";display:block;clear:both;}
.clearfix{zoom:1;}