css初始化

1、最简单，最消耗资源的

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

2、选择性初始化

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;}

3、sina

/* 全局样式 */
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;}

4、yahoo

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;
}

5、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;}