CSS初始化
相同的元素,如li,在不同的浏览器下显示的效果稍有不同,是因为各浏览器对各元素的margin,border等初始值及font-size等略有不同,如何杜绝这种情况,通过CSS强制让所有元素的属性值都一样,这样浏览器显示就一致了,减少了不兼容情况的发生,这个过程叫做CSS初始化:
腾讯QQ官网(http://www.qq.com)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}
新浪官网(http://www.sina.com.cn/)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;}
淘宝官网(http://www.taobao.com/)样式初始化(淘宝的样式是经过压缩的,格式化过的)
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(http://www.163.com/)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;}
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