常用的标签清空内外边距

body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,tr,th,td,img,div,dl,dt,dd,input,span,a{margin:0;padding:0;}

body{font-size:none;}

img{border:none;}

li{list-style:none}

input,select,textarea{outline:none;}

textarea{resize:none;}

a{text-decoration:none;}