各大网站CSS样式初始化、

css代码之所以初始化，是因为能尽量减少 各浏览器之间的兼容性问题!

京东 样式初始化

@charset "utf-8";
/* CSS Document */
/* 京东的css重置 20140721 */
html,body,div,span,iframe,
h1,h2,h3,h4,h5,h6,p,
blockquote,pre,a,address,big,cite,code,del,em,font,img,ins,small,strong,var,b,u,i,center,
dl,dt,dd,ol,ul,li,
fieldset,form,label,legend{margin:0;padding:0;}
ol,ul{list-style:none;}
:focus{outline:0;}
a img{border:0;}
img{vertical-align:middle;}
table{empty-cells:show;}
ins{text-decoration:none;}
del{text-decoration:line-through;}
em{font-style:norma;}
button::-moz-focus-inner,
input[type=reset]::-moz-focus-inner,
input[type=button]::-moz-focus-inner,
input[type=submit]::-moz-focus-inner,
input[type=file]>input[type=button]::-moz-focus-inner{border:0;padding:0;}

淘宝 样式初始化

body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; }
    body, button, input, select, textarea { font:12px/1.5tahoma, arial, \5b8b\4f53; }
    h1, h2, h3, h4, h5, h6{ font-size:100%; }
    address, cite, dfn, em, var { font-style:normal; }
    code, kbd, pre, samp { font-family:couriernew, courier, monospace; }
    small{ font-size:12px; }
    ul, ol { list-style:none; }
    a { text-decoration:none; }
    a:hover { text-decoration:underline; }
    sup { vertical-align:text-top; }
    sub{ vertical-align:text-bottom; }
    legend { color:#000; }
    fieldset, img { border:0; }
    button, input, select, textarea { font-size:100%; }
    table { border-collapse:collapse; border-spacing:0; }

网易官网 样式初始化

html {overflow-y:scroll;}
    body {margin:0; padding:29px00; font:12px"\5B8B\4F53",sans-serif;background:#ffffff;}
    div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,blockquote,p{padding:0; margin:0;}
    table,td,tr,th{font-size:12px;}
    li{list-style-type:none;}
    img{vertical-align:top;border:0;}
    ol,ul {list-style:none;}
    h1,h2,h3,h4,h5,h6{font-size:12px; font-weight:normal;}
    address,cite,code,em,th {font-weight:normal; font-style:normal;} 

新浪官网 样式初始化

body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,td,img,div{margin:0;padding:0;border:0;}
    body{background:#fff;color:#333;font-size:12px; margin-top:5px;font-family:"SimSun","宋体","Arial Narrow";}
    ul,ol{list-style-type:none;}
    select,input,img,select{vertical-align:middle;}
    a{text-decoration:none;}
    a:link{color:#009;}
    a:visited{color:#800080;}
    a:hover,a:active,a:focus{color:#c00;text-decoration:underline;}

腾讯QQ官网 样式初始化

body,ol,ul,h1,h2,h3,h4,h5,h6,p,th,td,dl,dd,form,fieldset,legend,input,textarea,select{margin:0;padding:0}
    body{font:12px"宋体","Arial Narrow",HELVETICA;background:#fff;-webkit-text-size-adjust:100%;}
    a{color:#2d374b;text-decoration:none}
    a:hover{color:#cd0200;text-decoration:underline}
    em{font-style:normal}
    li{list-style:none}
    img{border:0;vertical-align:middle}
    table{border-collapse:collapse;border-spacing:0}
    p{word-wrap:break-word}