清除浏览器自带样式

html,body,h1,h2,h3,h4,h5,h6,div,dl,dt,dd,ul,ol,li,p,blockquote,pre,hr,figure,table,caption,th,td,form,fieldset,legend,input,button,textarea,menu{ margin : 0; padding : 0; }
header,footer,section,article,aside,nav,hgroup,address,figure,figcaption,menu,details{ display : block ;}
table{ border-collapse : collapse ; border-spacing : 0; }
caption,th{ text-align : left ; font-weight : normal ;}
html,body,fieldset,img,iframe,abbr{ border : 0; }
i,cite,em,var,address,dfn{ font-style : normal ;}
[hidefocus],summary{ outline : 0; }
li{ list-style : none ;}
h1,h2,h3,h4,h5,h6, small { font-size : 100% ;}
sup,sub{ font-size : 83% ;}
pre,code,kbd,samp{ font-family :inherit;}
q:before,q:after{ content : none ;}
textarea{ overflow : auto ;resize: none ;}
label,summary{ cursor : default ;}
a,button{ cursor : pointer ;}
h1,h2,h3,h4,h5,h6,em,strong,b{ font-weight : bold ;}
del,ins,u,s,a,a:hover{ text-decoration : none ;}
body,textarea,input,button,select,keygen,legend{ font : 12px /1.14  arial ,\5b8b\4f 53; color : #333 ; outline : 0; }
body{ background : #fff ;}
a,a:hover{ color : #333 ;}
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