css--清零的写法

body,ul,ol,li,h1,h2,h3,h4,h5,h6,form,fioldsot,table,td,img,div,dl,dt,dd,input{margin:0;padding:0;border:0}
body{font-size:13px;}
img{border:none;}
ul,ol{list-style:none;}
input,select,textarea{outline:none;}
textarea{resize:none;}
a{text-decoration:none;}
/*清浮动  */
.clearfix:after{content:"";display:block;clear:both;}
.clearfix{zoom:1;}