CSS初始化方案收集

发表于 2014-02-19   |   分类于 学习笔记   |  

CSS为什么要初始化？建站老手都知道，这是为了考虑到浏览器的兼容问题，其实不同浏览器对有些标签的默认值是不同的，如果没对CSS初始化往往会出现浏览器之间的页面差异。当然，初始化样式会对SEO有一定的影响，但鱼和熊掌不可兼得，但力求影响最小的情况下初始化。

最简单的初始化方法就是： {padding: 0; margin: 0;} 。有很多人也是这样写的。这确实很简单，但有人就会感到疑问： 号这样一个通用符在编写代码的时候是快，但如果网站很大，CSS样式表文件很大，这样写的话，他会把所有的标签都初始化一遍，这样就大大的加强了网站运行的负载，会使网站加载的时候需要很长一段时间。

写过css的都知道每个网页引进的css首先都需要初始化，而出名的css reset有YUI css reset（QQ、淘宝等都出现他的影子），业内用的最多的还有Erik Meyer’s CSS Reset。

花了点时间，把一些门户及大型网站的样式初始化罗列了下来（仅供参考）

腾讯- http://www.qq.com
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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- http://www.sina.com.cn/
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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- http://www.taobao.com/
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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- http://www.163.com/
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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- https://www.yahoo.com/
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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; }
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; }
博客园- http://www.cnblogs.com/
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/*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;}
Erik Meyer’s CSS Reset
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'html, body, div, span, applet, object, iframe, table, caption, tbody, tfoot, thead, tr, th, td,
del, dfn, em, font, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var,
h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code,
dl, dt, dd, ol, ul, li, fieldset, form, label, legend {
vertical-align: baseline;
font-family: inherit;
font-weight: inherit;
font-style: inherit;
font-size: 100%;
outline: 0;
padding: 0;
margin: 0;
border: 0;
}
/* remember to define focus styles! */
:focus { outline: 0; }
body { background: white; line-height: 1; color: black; }
ol, ul { list-style: none; }
/* tables still need cellspacing="0" in the markup */
table { border-collapse: separate; border-spacing: 0; }
caption, th, td { font-weight: normal; text-align: left; }
/* remove possible quote marks (") from <q> & <blockquote> */
blockquote:before, blockquote:after, q:before, q:after { content: ""; }
blockquote, q { quotes: "" ""; }'
Condensed Meyer Reset
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body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6,
pre, form, fieldset, input, textarea, p, blockquote, th, td {
padding: 0;
margin: 0;
}
fieldset, img { border: 0; }
table { border-collapse: collapse; border-spacing: 0; }
ol, ul { list-style: none; }
address, caption, cite, code, dfn, em, strong, th, var { font-weight: normal; font-style: normal; }
caption, th { text-align: left; }
h1, h2, h3, h4, h5, h6 { font-weight: normal; font-size: 100%; }
q:before, q:after { content: ''; }
abbr, acronym { border: 0; }
前端开发- http://www.webcjs.com/
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/*======== 全局 ========*/
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, fieldset, input, p, blockquote, th, td { margin:0; padding:0; }
body { font-size:12px; color:#666; font-family:Verdana, Microsoft YaHei, Simsun; background:#fff; line-height:24px; }
fieldset, img { border:0; }
ol, ul { list-style:none; }
h1, h2, h3, h4, h5, h6{ font-size:100%; }
em { font-style:normal; }
input, button, select, textarea { outline:none; } 
textarea { resize:none; } //禁用了文本的拖拉，尤其在谷歌下
p{ text-align:justify; text-justify:distribute;} //为了使文本段落左右两边对齐
/*======== Link ========*/
a { color: #666; text-decoration:none; }
a:hover { color: #f60; text-decoration:none; }

来源转自：WebCjs-前端开发

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