css清除默认样式

body,button,dd,dl,dt,form,h1,h2,h3,h4,h5,h6,hr,input,li,ol,p,td,textarea,th,ul {
 margin:0;
 padding:0
}

img{border:none;}

address,cite,dfn,em,var {
 font-style:normal
}

ol,ul,li {
 list-style:none
}

a {
 text-decoration:none
}

table {border-collapse:collapse;border-spacing:0;}