css初始化代码

为什么要初始化CSS？

CSS初始化是指重设浏览器的样式。不同的浏览器默认的样式可能不尽相同，所以开发时的第一件事可能就是如何把它们统一。如果没对CSS初始化往往会出现浏览器之间的页面差异。每次新开发网站或新网页时候通过初始化CSS样式的属性，为我们将用到的CSS或html标签更加方便准确，使得我们开发网页内容时更加方便简洁，同时减少CSS代码量，节约网页下载时间。

雅虎CSS初始化示例代码

<span style="font-family:Microsoft YaHei;"><span style="font-family:Microsoft YaHei;font-size:14px;"></span><table border="1" cellpadding="1" cellspacing="1" width="200"><tbody><tr><td> </td><td> </td></tr><tr><td> </td><td><ol><li><pre name="code" class="html">body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td { margin:0; padding:0; }

body { background:#fff; color:#555; font-size:14px; font-family: Verdana, Arial, Helvetica, sans-serif; }
td,th,caption { font-size:14px; }
h1, h2, h3, h4, h5, h6 { font-weight:normal; font-size:100%; }
address, caption, cite, code, dfn, em, strong, th, var { font-style:normal; font-weight:normal;}
a { color:#555; text-decoration:none; }
a:hover { text-decoration:underline; }
img { border:none; }
ol,ul,li { list-style:none; }
input, textarea, select, button { font:14px Verdana,Helvetica,Arial,sans-serif; }
table { border-collapse:collapse; }
html {overflow-y: scroll;}
/* css common */
.clearfix:after {content: "."; display: block; height:0; clear:both; visibility: hidden;}
.clearfix { *zoom:1; }</span>

  

淘宝官网 样式初始化

<span style="font-family:Microsoft YaHei;">
        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; } </span>

腾讯QQ官网 样式初始化

     <span style="font-family:Microsoft YaHei;">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} </span>

新浪官网 样式初始化

<span style="font-family:Microsoft YaHei;">
        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;} </span>

网易官网 样式初始化

<span style="font-family:Microsoft YaHei;">
        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;} </span>