CSS格式化代码（国内各大网站）

京东格式化CSS代码

/*京东格式化CSS代码*/
/*把所有标签的默认内外边距清零*/
* {
margin: 0;
padding: 0
}
/*em 和 i 斜体文字不倾斜*/
em,
i {
font-style: normal
}
/*去掉li的小圆点*/
li {
list-style: none
}

img {
/*border: 0;照顾低版本浏览器 如果 图片外面包含了链接会有边框的问题 */
border: 0;
/*取消图片底部有空白缝隙的问题*/
vertical-align: middle
}

button {
/*当鼠标经过按钮时，鼠标变成小手*/
cursor: pointer
}

a {
color: #666;
/* 取消链接下划线*/
text-decoration: none
}

/*链接鼠标经过，改变颜色*/
a:hover {
color: #c81623
}

button,
input {
font-family: Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, "\5B8B\4F53", sans-serif
}

body {
/*CSS3 抗锯齿*/
-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
}

/*自定义隐藏*/
.hide,
.none {
display: none
}

/*自定义清除浮动*/
.clearfix:after {
visibility: hidden;
clear: both;
display: block;
content: ".";
height: 0
}

.clearfix {
*zoom: 1
}

腾讯CSS格式化代码

html {
-ms-text-size-adjust: 100%;
-webkit-text-size-adjust: 100%;
font-size: 100px;
}

body {
color: #fff;
line-height: 1.5;
font-size: 14px;
font-family: 'PingFangSC-Regular', 'helvetica neue', tahoma, 'PingFang SC', 'microsoft yahei', arial, 'hiragino sans gb', sans-serif;
-webkit-font-smoothing: antialiased;
}

html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td {
margin: 0;
padding: 0;
}

button,
input,
optgroup,
select,
textarea {
color: inherit;
font: inherit;
margin: 0;
padding: 0;
border: 0;
background: 0;
}

button:focus,
input:focus,
optgroup:focus,
select:focus,
textarea:focus {
/*设置没有文本修饰（默认也是none）*/
text-decoration: none;
/*移动端 当点击一个链接或者通过Javascript定义的可点击元素的时候，它就会出现一个半透明的灰色背景，这里设置颜色为黑色*/
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
/*去掉文本框获取焦点是的蓝色框*/
outline: none;
}

textarea {
/*去掉多行文本框拖拽功能*/
resize: none;
}

img {
border: 0;
/*通过设置图片与文字底线对齐，来消除图片底部空白间隙*/
vertical-align: bottom;
}

a {
text-decoration: none;
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
/*消除下划线*/
outline: none;
}

a,
a:hover,
a:active,
a:visited,
a:link,
a:focus {
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
-webkit-tap-highlight-color: transparent;
outline: none;
background: none;
text-decoration: none;
}

ul,
li {
/*清除列表小圆点*/
list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
font-size: 100%;
font-variant: normal;
}

/*clearfix 清除浮动*/
.clearfix:before,
.clearfix:after {
content: "";
display: table;
}

.clearfix:after {
clear: both;
overflow: hidden;
}

/*自定义清除边距类*/
.clear-p-t {
padding-top: 0 !important;
}

.clear-margin {
margin: 0 !important;
}

.clear-b-margin {
margin-bottom: 0 !important;
}

.light {
color: #0052D9;
}

.p-light {
padding-left: 5px;
}

百度CSS格式化代码

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
}

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
}

ol,
ul {
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
}

.left {
float: left
}

.right {
float: right
}

.overflow {
overflow: hidden
}

.hide {
display: none
}

.block {
display: block
}

.inline {
display: inline
}

.error {
color: red;
font-size: 12px
}

button,
label {
cursor: pointer
}

.clearfix:after {
content: '\20';
display: block;
height: 0;
clear: both
}

.clearfix {
zoom: 1
}

.clear {
clear: both;
height: 0;
line-height: 0;
font-size: 0;
visibility: hidden;
overflow: hidden
}

.wordwrap {
word-break: break-all;
word-wrap: break-word
}

.s-yahei {
font-family: arial, 'Microsoft Yahei', '微软雅黑'
}