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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

 

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;}