CSS初始化代码

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。

最耗资源的，最简单的

* { padding: 0; margin: 0; border: 0; }

选择性初始化举例（综合）

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,legend,button
form,fieldset,input,textarea,p,blockquote,th,td {
　　padding: 0;
　　margin: 0;
}
/* 酌情修改 */
body {
background:#fff;color:#333;font-size:12px; margin-top:5px;font-family:"SimSun","宋体","Arial Narrow";
}

/* 短引用的内容可取值：''或"" */
q:before,q:after {content:”;}

/* 缩写，图片等无边框 */
fieldset,img,abbr,acronym {border: 0 none;}
abbr,acronym {font-variant: normal;}
legend {color:#000;}

/* 清除特殊标记的字体和字号 */
address,caption,cite,code,dfn,em,strong,th,var {
　　font-weight: normal;
　　font-style: normal;
}

/* 上下标 */
sup {vertical-align: text-top;}
sub {vertical-align: text-bottom;}

/* 设置表格的边框被合并为一个单一的边框, 指定分隔边框模型中单元格边界之间的距离为0*/
table {
　　border-collapse: collapse;
　　border-spacing: 0;
}

/* 表格标题及内容居左显示 */
caption,th {text-align: left;}
input,img,select {vertical-align:middle;}

/* 清除列表样式 */
ol,ul {list-style: none;}

/* 输入控件字体 */
input,button,textarea,select,optgroup,option {
font-family:inherit;
font-size:inherit;
font-style:inherit;
font-weight:inherit;
}

/* 标题元素样式清除 */
h1,h2,h3,h4,h5,h6 {
　　font-weight: normal;
　　font-size: 100%;
}

/* 链接样式，颜色可酌情修改 */
del,ins,a {text-decoration:none;}
a:link {color:#009;}
a:visited {color:#800080;}
a:hover,a:active,a:focus {color:#c00; text-decoration:underline;}

/* 鼠标样式 */
input[type="submit"] {cursor: pointer;}
button {cursor: pointer;}
input::-moz-focus-inner { border: 0; padding: 0;}

.clear {clear:both;}

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

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;}

雅虎样式初始化

html{background:none repeat scroll 0 0#FFFFFF;color:#000000;}
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{margin:0;padding:0;}
table{border-collapse:collapse;border-spacing:0;}
fieldset,img{border:0 none;}
address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}
li{list-style:none outside none;}
caption,th{text-align:left;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
q:before,q:after{content:"";}
abbr,acronym{border:0 none;font-variant:normal;}
sup{vertical-align:text-top;}
sub{vertical-align:text-bottom;}
input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;}
input,textarea,select{}
legend{color:#000000;}
body{font:13px/1.231 arial,helvetica,clean,sans-serif;}
select,input,button,textarea{font:99%arial,helvetica,clean,sans-serif;}
table{font-size:inherit;}
pre,code,kbd,samp,tt{font-family:monospace;line-height:100%;}
a{text-decoration:none;}
a:hover,a:focus{text-decoration:underline;}
strong{font-weight:bold;}
input[type="submit"]{cursor:pointer;}
button{cursor:pointer;}

WEB开发者

/* css reset www.admin10000.com */
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; }

博客园

/*version: 2.7.0*/
html,body{color:#000;background:#FFF;}
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;
}
table{border-collapse:collapse;border-spacing:0;}
fieldset,img{border:0;}
address,caption,cite,code,dfn,em,strong,th,var,optgroup{
font-style:inherit;font-weight:inherit;
}
del,ins{text-decoration:none;}
li{list-style:none;}
caption,th{text-align:left;}
h1,h2,h3,h4,h5,h6{    font-size:100%;font-weight:normal;}
q:before,q:after{content:'';}
abbr,acronym{border:0;font-variant:normal;}
sup{vertical-align:baseline;}
sub{vertical-align:baseline;}
legend{color:#000;}
input,button,textarea,select,optgroup,option{
font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;
}
input,button,textarea,select{*font-size:100%;}
.clear{clear:both;}
input::-moz-focus-inner{ border: 0;padding: 0;}

/*added*/
input[type=button],input[type=submit] {-webkit-appearance: button;}