CSS - css初始化

常见的初始化：

html, body, ul, li, ol, dl, dd, dt, p, h1, h2, h3, h4, h5, h6, form, fieldset, legend, img {
    margin: 0;
    padding: 0;
}
 
fieldset, img, input, button {             /*fieldset组合表单中的相关元素*/
    border: none;
    padding: 0;
    margin: 0;
    outline-style: none;
}
 
ul, ol {
    list-style: none;                /*清除列表风格*/
}
 
input {
    padding-top: 0;
    padding-bottom: 0;
    font-family: "SimSun", "宋体";
}
 
select, input {
    vertical-align: middle;
}
 
select, input, textarea {
    font-size: 12px;
    margin: 0;
}
 
textarea {
    resize: none;
}
 
/*防止多行文本框拖动*/
img {
    border: 0;
    vertical-align: middle;
}
 
/*  去掉图片低测默认的3像素空白缝隙*/
table {
    border-collapse: collapse;            /*合并外边线*/
}
 
 
body {
    font: 12px/150% Arial, Verdana, "\5b8b\4f53";    /*宋体，Unicode，统一码*/
    color: #666;
    background: #fff
}
 
.clearfix:before, .clearfix:after {
    content: "";
    display: table;
}
 
.clearfix:after {
    clear: both;
}
 
.clearfix {
    *zoom: 1; /*IE/7/6*/
}
 
a {
    color: #666;
    text-decoration: none;
}
 
a:hover {
    color: #C81623;
}
 
h1, h2, h3, h4, h5, h6 {
    text-decoration: none;
    font-weight: normal;
    font-size: 100%;
}
 
s, i, em {
    font-style: normal;
    text-decoration: none;
}
 
.col-red {
    color: #C81623 !important;
}

百度：

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
}
 
html {
    color: #000;
    overflow-y: scroll;
    overflow: -moz-scrollbars
}
 
body, button, input, select, textarea {
    font: 12px arial
}
 
h1, h2, h3, h4, h5, h6 {
    font-size: 100%
}
 
em {
    font-style: normal
}
 
small {
    font-size: 12px
}
 
ul, ol {
    list-style: none
}
 
a {
    text-decoration: none
}
 
a:hover {
    text-decoration: underline
}
 
legend {
    color: #000
}
 
fieldset, img {
    border: 0
}
 
button, input, select, textarea {
    font-size: 100%
}
 
table {
    border-collapse: collapse;
    border-spacing: 0
}
 
img {
    -ms-interpolation-mode: bicubic
}
 
textarea {
    resize: vertical
}

腾讯：

body, dd, dl, fieldset, form, h1, h2, h3, h4, h5, h6, input, legend, ol, p, select, td, textarea, th, ul {
    margin: 0;
    padding: 0
}
 
body {
    font: 12px SimSun, "Arial Narrow", HELVETICA;
    background: #fff;
    -webkit-text-size-adjust: 100%
}
 
a {
    color: #172c45;
    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
}

淘宝：

blockquote, body, button, dd, dl, dt, fieldset, form, h1, h2, h3, h4, h5, h6, hr, input, legend, li, ol, p, pre, td, textarea, th, ul {
    margin: 0;
    padding: 0
}
 
body, button, input, select, textarea {
    font: 12px/1.5 tahoma, arial, 'Hiragino Sans GB', '\5b8b\4f53', sans-serif
}
 
h1, h2, h3, h4, h5, h6 {
    font-size: 100%
}
 
address, cite, dfn, em, var {
    font-style: normal
}
 
code, kbd, pre, samp {
    font-family: courier new, courier, monospace
}
 
small {
    font-size: 12px
}
 
ol, ul {
    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
}
 
button {
    border-radius: 0;
}

京东：

* {
    margin: 0;
    padding: 0
}
 
em, i {
    font-style: normal
}
 
li {
    list-style: none
}
 
img {
    border: 0;
    vertical-align: middle
}
 
button {
    cursor: pointer
}
 
a {
    color: #666;
    text-decoration: none
}
 
a:hover {
    color: #e33333
}
 
button, input {
    font-family: Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, \\5B8B\4F53, sans-serif
}
 
body {
    -webkit-font-smoothing: antialiased;
    background-color: #fff;
    font: 12px/1.5 Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, \\5B8B\4F53, sans-serif;
    color: #666
}