css代碼之所以初始化，是因為能盡量減少 各瀏覽器之間的兼容性問題!
騰訊QQ官網?樣式初始化
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"宋體","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}
新浪官網 樣式初始化
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","宋體","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;}
淘寶官網 樣式初始化
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;?}
網易官網 樣式初始化
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;}
