将所有标签的margin和padding都为0
*{margin:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px}
body{
background:#FFFFFF;
color：#000000;
font-size:12px;
font-weight:normal;
font-family:微软雅黑,宋体,Arial;
}
a:link{color: Black;text-decoration: none;}
a:visited{color: Black;text-decoration: none;}
a:hover{color: Black;text-decoration:underline;cursor: pointer;}
a:active{color: Black;text-decoration: none;}
a img{border:none}
:focus{border:none;outline:0}
::-moz-focus-inner{border:none;outline:0}
ul,li{list-style: none;margin:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px}
form,div,img,dl,dt,dd,h1,h2,h3,h4,h5,p{border:0;margin:0;padding-right:0px;padding-bottom:0px;padding-left:0px}