css重置

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td {
        margin:0;
        padding:0;
}
table {border-collapse:collapse;border-spacing:0;}
fieldset,img { border:0;}
address,caption,cite,code,dfn,em,strong,th,var {font-style:normal;
font-weight:normal;}
ol,ul {list-style:none;}
caption,th {text-align:left;}
h1,h2,h3,h4,h5,h6 {font-size:100%;font-weight:normal;}
q:before,q:after {content:'';}
abbr,acronym { border:0;}