Bootstrap源码分析系列之核心CSS

时间：2023-02-23 21:53:32

本节主要介绍核心CSS，从整体架构中的7个Less文件对应的源码分别进行分析

scaffolding.less

这个文件编译后的css文件(886~989行)其作用就像定义全局样式。

//调整css盒模型为border-box,这样修改使得添加padding不至于元素宽度超出边界

* { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }

*:before,

*:after { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }

//由此可知IE8+都支持box-sizing: border-box;

//对body input a 等一些元素进行初始化，还包括对图片，缩略图的处理

html { font-size: 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }

//个人觉得这里的font-size: 10px;根本没起作用，会被body中定义的字体大小覆盖

//-webkit-tap-highlight-color: rgba(0, 0, 0, 0);适用于webkit内核浏览器中取消可点击元素的半透明灰色背景

body { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 14px; line-height: 1.42857143; color: #333; background-color: #fff; }

input,

button,

select,

textarea { font-family: inherit; font-size: inherit; line-height: inherit; }

a { color: #428bca; text-decoration: none; }

a:hover,

a:focus { color: #2a6496; text-decoration: underline; }

a:focus { outline: thin dotted; outline: 5px auto -webkit-focus-ring-color; outline-offset: -2px; }

//这里定义a连接获得焦点的状态，除了outline: thin dotted;后面几个浏览器不全支持

figure { margin: 0; }

img { vertical-align: middle; }

.img-responsive,

.thumbnail > img,

.thumbnail a > img,

.carousel-inner > .item > img,

.carousel-inner > .item > a > img { display: block; max-width: 100%; height: auto; }

.img-rounded { border-radius: 6px; }

.img-thumbnail { display: inline-block; max-width: 100%; height: auto; padding: 4px; line-height: 1.42857143; background-color: #fff; border: 1px solid #ddd; border-radius: 4px; -webkit-transition: all .2s ease-in-out; -o-transition: all .2s ease-in-out; transition: all .2s ease-in-out; }

.img-circle { border-radius: 50%; }

hr { margin-top: 20px; margin-bottom: 20px; border: 0; border-top: 1px solid #eee; }

//定义在阅读屏幕中的样式

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

.sr-only-focusable:active,

.sr-only-focusable:focus { position: static; width: auto; height: auto; margin: 0; overflow: visible; clip: auto; }

type.less

排版样式，编译后对应源码为990~1335行

h1,

h2,

h3,

h4,

h5,

h6,

.h1,

.h2,

.h3,

.h4,

.h5,

.h6 { font-family: inherit; font-weight: 500; line-height: 1.1; color: inherit; }

h1 small,

h2 small,

h3 small,

h4 small,

h5 small,

h6 small,

.h1 small,

.h2 small,

.h3 small,

.h4 small,

.h5 small,

.h6 small,

h1 .small,

h2 .small,

h3 .small,

h4 .small,

h5 .small,

h6 .small,

.h1 .small,

.h2 .small,

.h3 .small,

.h4 .small,

.h5 .small,

.h6 .small { font-weight: normal; line-height: 1; color: #777; }

h1,

.h1,

h2,

.h2,

h3,

.h3 { margin-top: 20px; margin-bottom: 10px; }

h1 small,

.h1 small,

h2 small,

.h2 small,

h3 small,

.h3 small,

h1 .small,

.h1 .small,

h2 .small,

.h2 .small,

h3 .small,

.h3 .small { font-size: 65%; }

h4,

.h4,

h5,

.h5,

h6,

.h6 { margin-top: 10px; margin-bottom: 10px; }

h4 small,

.h4 small,

h5 small,

.h5 small,

h6 small,

.h6 small,

h4 .small,

.h4 .small,

h5 .small,

.h5 .small,

h6 .small,

.h6 .small { font-size: 75%; }

h1,

.h1 { font-size: 36px; }

h2,

.h2 { font-size: 30px; }

h3,

.h3 { font-size: 24px; }

h4,

.h4 { font-size: 18px; }

h5,

.h5 { font-size: 14px; }

h6,

.h6 { font-size: 12px; }

//对标题h1~h6样式定义，并定义了副标题small

p { margin: 0 0 10px; }

.lead { margin-bottom: 20px; font-size: 16px; font-weight: 300; line-height: 1.4; }

@media (min-width: 768px) {.lead {font-size: 21px;}}

//添加 .lead 类可以让段落突出显示

small,

.small { font-size: 85%; }

mark,

.mark { padding: .2em; background-color: #fcf8e3; }

.text-left { text-align: left; }

.text-right { text-align: right; }

.text-center { text-align: center; }

.text-justify { text-align: justify; }

//文字对其样式

.text-nowrap { white-space: nowrap; }

.text-lowercase { text-transform: lowercase; }

.text-uppercase { text-transform: uppercase; }

.text-capitalize { text-transform: capitalize; }

.text-muted { color: #777; }

.text-primary { color: #428bca; }

a.text-primary:hover { color: #3071a9; }

.text-success { color: #3c763d; }

a.text-success:hover { color: #2b542c; }

.text-info { color: #31708f; }

a.text-info:hover { color: #245269; }

.text-warning { color: #8a6d3b; }

a.text-warning:hover { color: #66512c; }

.text-danger { color: #a94442; }

a.text-danger:hover { color: #843534; }

.bg-primary { color: #fff; background-color: #428bca; }

a.bg-primary:hover { background-color: #3071a9; }

.bg-success { background-color: #dff0d8; }

a.bg-success:hover { background-color: #c1e2b3; }

.bg-info { background-color: #d9edf7; }

a.bg-info:hover { background-color: #afd9ee; }

.bg-warning { background-color: #fcf8e3; }

a.bg-warning:hover { background-color: #f7ecb5; }

.bg-danger { background-color: #f2dede; }

a.bg-danger:hover { background-color: #e4b9b9; }

.page-header { padding-bottom: 9px; margin: 40px 0 20px; border-bottom: 1px solid #eee; }

ul,

ol { margin-top: 0; margin-bottom: 10px; }

ul ul,

ol ul,

ul ol,

ol ol { margin-bottom: 0; }

.list-unstyled { padding-left: 0; list-style: none; }

.list-inline { padding-left: 0; margin-left: -5px; list-style: none; }

.list-inline > li { display: inline-block; padding-right: 5px; padding-left: 5px; }

dl { margin-top: 0; margin-bottom: 20px; }

dt,

dd { line-height: 1.42857143; }

dt { font-weight: bold; }

dd { margin-left: 0; }

@media (min-width: 768px) { .dl-horizontal dt { float: left; width: 160px; overflow: hidden; clear: left; text-align: right; text-overflow: ellipsis; white-space: nowrap; }le] { cursor: help; border-bottom: 1px dotted #777; }

//列表样式

.initialism { font-size: 90%; text-transform: uppercase; }

blockquote { padding: 10px 20px; margin: 0 0 20px; font-size: 17.5px; border-left: 5px solid #eee; }

blockquote p:last-child,

blockquote ul:last-child,

blockquote ol:last-child { margin-bottom: 0; }

blockquote footer,

blockquote small,

blockquote .small { display: block; font-size: 80%; line-height: 1.42857143; color: #777; }

blockquote footer:before,

blockquote small:before,

blockquote .small:before { content: '\2014 \00A0'; }

.blockquote-reverse,

blockquote.pull-right { padding-right: 15px; padding-left: 0; text-align: right; border-right: 5px solid #eee; border-left: 0; }

.blockquote-reverse footer:before,

blockquote.pull-right footer:before,

.blockquote-reverse small:before,

blockquote.pull-right small:before,

.blockquote-reverse .small:before,

blockquote.pull-right .small:before { content: ''; }

.blockquote-reverse footer:after,

blockquote.pull-right footer:after,

.blockquote-reverse small:after,

blockquote.pull-right small:after,

.blockquote-reverse .small:after,

blockquote.pull-right .small:after { content: '\00A0 \2014'; }

//引用样式

address { margin-bottom: 20px; font-style: normal; line-height: 1.42857143; }

//地址或联系方式样式

code.less

代码样式，编译后对应源码为1336~1389行

code,kbd,pre,samp { font-family: Menlo, Monaco, Consolas, "Courier New", monospace; }

code { padding: 2px 4px; font-size: 90%; color: #c7254e; background-color: #f9f2f4; border-radius: 4px; }

kbd { padding: 2px 4px; font-size: 90%; color: #fff; background-color: #333; border-radius: 3px; -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .25); box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .25); }

kbd kbd { padding: 0; font-size: 100%; font-weight: bold; -webkit-box-shadow: none; box-shadow: none; }

pre { display: block; padding: 9.5px; margin: 0 0 10px; font-size: 13px; line-height: 1.42857143; color: #333; word-break: break-all; word-wrap: break-word; background-color: #f5f5f5; border: 1px solid #ccc; border-radius: 4px; }

pre code { padding: 0; font-size: inherit; color: inherit; white-space: pre-wrap; background-color: transparent; border-radius: 0; }

.pre-scrollable { max-height: 340px; overflow-y: scroll; }

grid.less

栅格系统，编译后对应源码为1390~2056行

关于栅格系统，新手会觉得它很难理解。其实你只要记住的总是把一个容器分成12列(colspan)，根据屏幕的大小(通过媒体查询@media)分为超小屏幕xs(x-small),小屏幕sm(small),中等屏幕md(middle)，大屏幕lg(large)

在响应式布局中可以针对不同的屏幕大小给某一列添加多个类

<div class="row">

  <div class="col-xs-12 col-sm-6 col-md-8">.col-xs-12 .col-sm-6 .col-md-8</div>

  <div class="col-xs-6 col-md-4">.col-xs-6 .col-md-4</div>

</div>

每一列单元格可以嵌套，就像单元格的拆分一样，但是被嵌套的行（row）所包含的列（column）的个数不能超过12

<div class="row">

  <div class="col-sm-9">

    <div class="row">

      <div class="col-xs-8 col-sm-6">Level 2: .col-xs-8 .col-sm-6</div>

      <div class="col-xs-4 col-sm-6">Level 2: .col-xs-4 .col-sm-6</div>

    </div>

  </div>

</div>

使用offset可以将列向右侧偏移，向右侧偏移的列数和这行剩下的列数总和为12

<div class="row">

  <div class="col-md-4">.col-md-4</div>

  <div class="col-md-4 col-md-offset-4">.col-md-4 .col-md-offset-4</div>

</div>

通过使用push可以实现将列向右移，使用pull可以实现将列向右移

<div class="row">

  <div class="col-md-9 col-md-push-3">.col-md-9 .col-md-push-3</div>

  <div class="col-md-3 col-md-pull-9">.col-md-3 .col-md-pull-9</div>

</div>

tables.less

表格样式，编译后对应源码为2057~2296行

table样式非常适合从框架中分离出来单独使用

table { background-color: transparent; }

caption { padding-top: 8px; padding-bottom: 8px; color: #777; text-align: left; }

th { text-align: left; }

.table { width: 100%; max-width: 100%; margin-bottom: 20px; }

.table > thead > tr > th,

.table > tbody > tr > th,

.table > tfoot > tr > th,

.table > thead > tr > td,

.table > tbody > tr > td,

.table > tfoot > tr > td { padding: 8px; line-height: 1.42857143; vertical-align: top; border-top: 1px solid #ddd; }

.table > thead > tr > th { vertical-align: bottom; border-bottom: 2px solid #ddd; }

.table > caption + thead > tr:first-child > th,

.table > colgroup + thead > tr:first-child > th,

.table > thead:first-child > tr:first-child > th,

.table > caption + thead > tr:first-child > td,

.table > colgroup + thead > tr:first-child > td,

.table > thead:first-child > tr:first-child > td { border-top: 0; }

.table > tbody + tbody { border-top: 2px solid #ddd; }

.table .table { background-color: #fff; }

//table基本样式

.table-condensed > thead > tr > th,

.table-condensed > tbody > tr > th,

.table-condensed > tfoot > tr > th,

.table-condensed > thead > tr > td,

.table-condensed > tbody > tr > td,

.table-condensed > tfoot > tr > td { padding: 5px; }

//紧缩表格，通过设置单元格padding来实现

.table-bordered { border: 1px solid #ddd; }

.table-bordered > thead > tr > th,

.table-bordered > tbody > tr > th,

.table-bordered > tfoot > tr > th,

.table-bordered > thead > tr > td,

.table-bordered > tbody > tr > td,

.table-bordered > tfoot > tr > td { border: 1px solid #ddd; }

.table-bordered > thead > tr > th,

.table-bordered > thead > tr > td { border-bottom-width: 2px; }

//带边框的表格，通过设置border来实现边框

.table-striped > tbody > tr:nth-child(odd) { background-color: #f9f9f9; }

//条纹状表格，通过更改奇数行的背景颜色来实现

.table-hover > tbody > tr:hover { background-color: #f5f5f5; }

table col[class*="col-"] { position: static; display: table-column; float: none; }

table td[class*="col-"],

table th[class*="col-"] { position: static; display: table-cell; float: none; }

.table > thead > tr > td.active,

.table > tbody > tr > td.active,

.table > tfoot > tr > td.active,

.table > thead > tr > th.active,

.table > tbody > tr > th.active,

.table > tfoot > tr > th.active,

.table > thead > tr.active > td,

.table > tbody > tr.active > td,

.table > tfoot > tr.active > td,

.table > thead > tr.active > th,

.table > tbody > tr.active > th,

.table > tfoot > tr.active > th { background-color: #f5f5f5; }

//鼠标悬停在行或单元格上时所设置背景颜色

.table-hover > tbody > tr > td.active:hover,

.table-hover > tbody > tr > th.active:hover,

.table-hover > tbody > tr.active:hover > td,

.table-hover > tbody > tr:hover > .active,

.table-hover > tbody > tr.active:hover > th { background-color: #e8e8e8; }

//鼠标悬停背景颜色变化表格

.table > thead > tr > td.success,

.table > tbody > tr > td.success,

.table > tfoot > tr > td.success,

.table > thead > tr > th.success,

.table > tbody > tr > th.success,

.table > tfoot > tr > th.success,

.table > thead > tr.success > td,

.table > tbody > tr.success > td,

.table > tfoot > tr.success > td,

.table > thead > tr.success > th,

.table > tbody > tr.success > th,

.table > tfoot > tr.success > th { background-color: #dff0d8; }

.table-hover > tbody > tr > td.success:hover,

.table-hover > tbody > tr > th.success:hover,

.table-hover > tbody > tr.success:hover > td,

.table-hover > tbody > tr:hover > .success,

.table-hover > tbody > tr.success:hover > th { background-color: #d0e9c6; }

//标识成功或积极的动作

.table > thead > tr > td.info,

.table > tbody > tr > td.info,

.table > tfoot > tr > td.info,

.table > thead > tr > th.info,

.table > tbody > tr > th.info,

.table > tfoot > tr > th.info,

.table > thead > tr.info > td,

.table > tbody > tr.info > td,

.table > tfoot > tr.info > td,

.table > thead > tr.info > th,

.table > tbody > tr.info > th,

.table > tfoot > tr.info > th { background-color: #d9edf7; }

.table-hover > tbody > tr > td.info:hover,

.table-hover > tbody > tr > th.info:hover,

.table-hover > tbody > tr.info:hover > td,

.table-hover > tbody > tr:hover > .info,

.table-hover > tbody > tr.info:hover > th { background-color: #c4e3f3; }

//标识普通的提示信息或动作

.table > thead > tr > td.warning,

.table > tbody > tr > td.warning,

.table > tfoot > tr > td.warning,

.table > thead > tr > th.warning,

.table > tbody > tr > th.warning,

.table > tfoot > tr > th.warning,

.table > thead > tr.warning > td,

.table > tbody > tr.warning > td,

.table > tfoot > tr.warning > td,

.table > thead > tr.warning > th,

.table > tbody > tr.warning > th,

.table > tfoot > tr.warning > th { background-color: #fcf8e3; }

.table-hover > tbody > tr > td.warning:hover,

.table-hover > tbody > tr > th.warning:hover,

.table-hover > tbody > tr.warning:hover > td,

.table-hover > tbody > tr:hover > .warning,

.table-hover > tbody > tr.warning:hover > th { background-color: #faf2cc; }

//标识警告或需要用户注意

.table > thead > tr > td.danger,

.table > tbody > tr > td.danger,

.table > tfoot > tr > td.danger,

.table > thead > tr > th.danger,

.table > tbody > tr > th.danger,

.table > tfoot > tr > th.danger,

.table > thead > tr.danger > td,

.table > tbody > tr.danger > td,

.table > tfoot > tr.danger > td,

.table > thead > tr.danger > th,

.table > tbody > tr.danger > th,

.table > tfoot > tr.danger > th { background-color: #f2dede; }

.table-hover > tbody > tr > td.danger:hover,

.table-hover > tbody > tr > th.danger:hover,

.table-hover > tbody > tr.danger:hover > td,

.table-hover > tbody > tr:hover > .danger,

.table-hover > tbody > tr.danger:hover > th { background-color: #ebcccc; }

//标识危险或潜在的带来负面影响的动作

.table-responsive { min-height: .01%; overflow-x: auto; }

//min-height: .01%;消除IE9的BUG

@media screen and (max-width: 767px) {

  .table-responsive {

    width: 100%;

    margin-bottom: 15px;

    overflow-y: hidden;

    -ms-overflow-style: -ms-autohiding-scrollbar;

    border: 1px solid #ddd;

  }

  .table-responsive > .table {

    margin-bottom: 0;

  }

  .table-responsive > .table > thead > tr > th,

  .table-responsive > .table > tbody > tr > th,

  .table-responsive > .table > tfoot > tr > th,

  .table-responsive > .table > thead > tr > td,

  .table-responsive > .table > tbody > tr > td,

  .table-responsive > .table > tfoot > tr > td {

    white-space: nowrap;

  }

  .table-responsive > .table-bordered {

    border: 0;

  }

  .table-responsive > .table-bordered > thead > tr > th:first-child,

  .table-responsive > .table-bordered > tbody > tr > th:first-child,

  .table-responsive > .table-bordered > tfoot > tr > th:first-child,

  .table-responsive > .table-bordered > thead > tr > td:first-child,

  .table-responsive > .table-bordered > tbody > tr > td:first-child,

  .table-responsive > .table-bordered > tfoot > tr > td:first-child {

    border-left: 0;

  }

  .table-responsive > .table-bordered > thead > tr > th:last-child,

  .table-responsive > .table-bordered > tbody > tr > th:last-child,

  .table-responsive > .table-bordered > tfoot > tr > th:last-child,

  .table-responsive > .table-bordered > thead > tr > td:last-child,

  .table-responsive > .table-bordered > tbody > tr > td:last-child,

  .table-responsive > .table-bordered > tfoot > tr > td:last-child {

    border-right: 0;

  }

  .table-responsive > .table-bordered > tbody > tr:last-child > th,

  .table-responsive > .table-bordered > tfoot > tr:last-child > th,

  .table-responsive > .table-bordered > tbody > tr:last-child > td,

  .table-responsive > .table-bordered > tfoot > tr:last-child > td {

    border-bottom: 0;

  }

}

//响应式中的表格

forms.less

表单样式，编译后对应源码为2297~2781行

fieldset { min-width: 0; padding: 0; margin: 0; border: 0; }

//min-width: 0;是的更像一个块状元素

legend { display: block; width: 100%; padding: 0; margin-bottom: 20px; font-size: 21px; line-height: inherit; color: #333; border: 0; border-bottom: 1px solid #e5e5e5; }

label { display: inline-block; max-width: 100%; margin-bottom: 5px; font-weight: bold; }

input[type="search"] { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }

input[type="radio"],

input[type="checkbox"] { margin: 4px 0 0; margin-top: 1px \9; line-height: normal; }

//margin-top: 1px\9;IE hack

input[type="file"] { display: block; }

input[type="range"] { display: block; width: 100%; }

select[multiple],

select[size] { height: auto; }

input[type="file"]:focus,

input[type="radio"]:focus,

input[type="checkbox"]:focus { outline: thin dotted; outline: 5px auto -webkit-focus-ring-color; outline-offset: -2px; }

output { display: block; padding-top: 7px; font-size: 14px; line-height: 1.42857143; color: #555; }

//output不同类型的输出，比如脚本的输出。IE不支持

.form-control { display: block; width: 100%; height: 34px; padding: 6px 12px; font-size: 14px; line-height: 1.42857143; color: #555; background-color: #fff; background-image: none; border: 1px solid #ccc; border-radius: 4px; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); -webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s; -o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s; transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s; }

.form-control:focus { border-color: #66afe9; outline: 0; -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6); box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6); }

.form-control::-moz-placeholder { color: #999; opacity: 1; }

.form-control:-ms-input-placeholder { color: #999; }

.form-control::-webkit-input-placeholder { color: #999; }

//表单控件样式

.form-control[disabled],

.form-control[readonly],

fieldset[disabled] .form-control { cursor: not-allowed; background-color: #eee; opacity: 1; }

textarea.form-control { height: auto; }

//文本域

input[type="search"] { -webkit-appearance: none; }

input[type="date"],

input[type="time"],

input[type="datetime-local"],

input[type="month"] { line-height: 34px; line-height: 1.42857143 \0; }

input[type="date"].input-sm,

input[type="time"].input-sm,

input[type="datetime-local"].input-sm,

input[type="month"].input-sm { line-height: 30px; line-height: 1.5 \0; }

input[type="date"].input-lg,

input[type="time"].input-lg,

input[type="datetime-local"].input-lg,

input[type="month"].input-lg { line-height: 46px; line-height: 1.33 \0; }

_:-ms-fullscreen,

:root input[type="date"],

_:-ms-fullscreen,

:root input[type="time"],

_:-ms-fullscreen,

:root input[type="datetime-local"],

_:-ms-fullscreen,

:root input[type="month"] { line-height: 1.42857143; }

_:-ms-fullscreen.input-sm,

:root input[type="date"].input-sm,

_:-ms-fullscreen.input-sm,

:root input[type="time"].input-sm,

_:-ms-fullscreen.input-sm,

:root input[type="datetime-local"].input-sm,

_:-ms-fullscreen.input-sm,

:root input[type="month"].input-sm { line-height: 1.5; }

_:-ms-fullscreen.input-lg,

:root input[type="date"].input-lg,

_:-ms-fullscreen.input-lg,

:root input[type="time"].input-lg,

_:-ms-fullscreen.input-lg,

:root input[type="datetime-local"].input-lg,

_:-ms-fullscreen.input-lg,

:root input[type="month"].input-lg { line-height: 1.33; }

//日期控件

//_:-ms-fullscreen IE 11黑客逆向iOS破解时间输入。

//:root根目录，IE8不支持

.form-group { margin-bottom: 15px; }

.radio,

.checkbox { position: relative; display: block; margin-top: 10px; margin-bottom: 10px; }

.radio label,

.checkbox label { min-height: 20px; padding-left: 20px; margin-bottom: 0; font-weight: normal; cursor: pointer; }

.radio input[type="radio"],

.radio-inline input[type="radio"],

.checkbox input[type="checkbox"],

.checkbox-inline input[type="checkbox"] { position: absolute; margin-top: 4px \9; margin-left: -20px; }

.radio + .radio,

.checkbox + .checkbox { margin-top: -5px; }

.radio-inline,

.checkbox-inline { display: inline-block; padding-left: 20px; margin-bottom: 0; font-weight: normal; vertical-align: middle; cursor: pointer; }

.radio-inline + .radio-inline,

.checkbox-inline + .checkbox-inline { margin-top: 0; margin-left: 10px; }

input[type="radio"][disabled],

input[type="checkbox"][disabled],

input[type="radio"].disabled,

input[type="checkbox"].disabled,

fieldset[disabled] input[type="radio"],

fieldset[disabled] input[type="checkbox"] { cursor: not-allowed; }

.radio-inline.disabled,

.checkbox-inline.disabled,

fieldset[disabled] .radio-inline,

fieldset[disabled] .checkbox-inline { cursor: not-allowed; }

.radio.disabled label,

.checkbox.disabled label,

fieldset[disabled] .radio label,

fieldset[disabled] .checkbox label { cursor: not-allowed; }

//单选和多选控件

.form-control-static { padding-top: 7px; padding-bottom: 7px; margin-bottom: 0; }

.form-control-static.input-lg,

.form-control-static.input-sm { padding-right: 0; padding-left: 0; }

.input-sm,

.form-group-sm .form-control { height: 30px; padding: 5px 10px; font-size: 12px; line-height: 1.5; border-radius: 3px; }

select.input-sm,

select.form-group-sm .form-control { height: 30px; line-height: 30px; }

textarea.input-sm,

textarea.form-group-sm .form-control,

select[multiple].input-sm,

select[multiple].form-group-sm .form-control { height: auto; }

.input-lg,

.form-group-lg .form-control { height: 46px; padding: 10px 16px; font-size: 18px; line-height: 1.33; border-radius: 6px; }

select.input-lg,

select.form-group-lg .form-control { height: 46px; line-height: 46px; }

textarea.input-lg,

textarea.form-group-lg .form-control,

select[multiple].input-lg,

select[multiple].form-group-lg .form-control { height: auto; }

//下拉列表

.has-feedback { position: relative; }

.has-feedback .form-control { padding-right: 42.5px; }

.form-control-feedback { position: absolute; top: 0; right: 0; z-index: 2; display: block; width: 34px; height: 34px; line-height: 34px; text-align: center; pointer-events: none; }

.input-lg + .form-control-feedback { width: 46px; height: 46px; line-height: 46px; }

.input-sm + .form-control-feedback { width: 30px; height: 30px; line-height: 30px; }

.has-success .help-block,

.has-success .control-label,

.has-success .radio,

.has-success .checkbox,

.has-success .radio-inline,

.has-success .checkbox-inline,

.has-success.radio label,

.has-success.checkbox label,

.has-success.radio-inline label,

.has-success.checkbox-inline label { color: #3c763d; }

.has-success .form-control { border-color: #3c763d; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); }

.has-success .form-control:focus { border-color: #2b542c; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #67b168; box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #67b168; }

.has-success .input-group-addon { color: #3c763d; background-color: #dff0d8; border-color: #3c763d; }

.has-success .form-control-feedback { color: #3c763d; }

.has-warning .help-block,

.has-warning .control-label,

.has-warning .radio,

.has-warning .checkbox,

.has-warning .radio-inline,

.has-warning .checkbox-inline,

.has-warning.radio label,

.has-warning.checkbox label,

.has-warning.radio-inline label,

.has-warning.checkbox-inline label { color: #8a6d3b; }

.has-warning .form-control { border-color: #8a6d3b; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); }

.has-warning .form-control:focus { border-color: #66512c; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #c0a16b; box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #c0a16b; }

.has-warning .input-group-addon { color: #8a6d3b; background-color: #fcf8e3; border-color: #8a6d3b; }

.has-warning .form-control-feedback { color: #8a6d3b; }

.has-error .help-block,

.has-error .control-label,

.has-error .radio,

.has-error .checkbox,

.has-error .radio-inline,

.has-error .checkbox-inline,

.has-error.radio label,

.has-error.checkbox label,

.has-error.radio-inline label,

.has-error.checkbox-inline label { color: #a94442; }

.has-error .form-control { border-color: #a94442; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075); }

.has-error .form-control:focus { border-color: #843534; -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #ce8483; box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #ce8483; }

.has-error .input-group-addon { color: #a94442; background-color: #f2dede; border-color: #a94442; }

.has-error .form-control-feedback { color: #a94442; }

.has-feedback label ~ .form-control-feedback { top: 25px; }

.has-feedback label.sr-only ~ .form-control-feedback { top: 0; }

.help-block { display: block; margin-top: 5px; margin-bottom: 10px; color: #737373; }

//校验状态

@media (min-width: 768px) { .form-inline .form-group { display: inline-block; margin-bottom: 0; vertical-align: middle; }eckbox-inline { padding-top: 7px; margin-top: 0; margin-bottom: 0; }

.form-horizontal .radio,

.form-horizontal .checkbox { min-height: 27px; }

.form-horizontal .form-group { margin-right: -15px; margin-left: -15px; }

@media (min-width: 768px) {

  .form-horizontal .control-label {

    padding-top: 7px;

    margin-bottom: 0;

    text-align: right;

  }

}

.form-horizontal .has-feedback .form-control-feedback {

  right: 15px;

}

@media (min-width: 768px) {

  .form-horizontal .form-group-lg .control-label {

    padding-top: 14.3px;

  }

}

@media (min-width: 768px) {

  .form-horizontal .form-group-sm .control-label {

    padding-top: 6px;

  }

}

buttons.less

按钮样式，编译后对应源码为2782~3171行

.btn { display: inline-block; padding: 6px 12px; margin-bottom: 0; font-size: 14px; font-weight: normal; line-height: 1.42857143; text-align: center; white-space: nowrap; vertical-align: middle; -ms-touch-action: manipulation; touch-action: manipulation; cursor: pointer; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; background-image: none; border: 1px solid transparent; border-radius: 4px; }

.btn:focus,

.btn:active:focus,

.btn.active:focus,

.btn.focus,

.btn:active.focus,

.btn.active.focus { outline: thin dotted; outline: 5px auto -webkit-focus-ring-color; outline-offset: -2px; }

.btn:hover,

.btn:focus,

.btn.focus { color: #333; text-decoration: none; }

.btn:active,

.btn.active { background-image: none; outline: 0; -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125); box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125); }

.btn.disabled,

.btn[disabled],

fieldset[disabled] .btn { pointer-events: none; cursor: not-allowed; filter: alpha(opacity=65); -webkit-box-shadow: none; box-shadow: none; opacity: .65; }

//按钮基本样式

.btn-default { color: #333; background-color: #fff; border-color: #ccc; }

.btn-default:hover,

.btn-default:focus,

.btn-default.focus,

.btn-default:active,

.btn-default.active,

.open > .dropdown-toggle.btn-default { color: #333; background-color: #e6e6e6; border-color: #adadad; }

.btn-default:active,

.btn-default.active,

.open > .dropdown-toggle.btn-default { background-image: none; }

.btn-default.disabled,

.btn-default[disabled],

fieldset[disabled] .btn-default,

.btn-default.disabled:hover,

.btn-default[disabled]:hover,

fieldset[disabled] .btn-default:hover,

.btn-default.disabled:focus,

.btn-default[disabled]:focus,

fieldset[disabled] .btn-default:focus,

.btn-default.disabled.focus,

.btn-default[disabled].focus,

fieldset[disabled] .btn-default.focus,

.btn-default.disabled:active,

.btn-default[disabled]:active,

fieldset[disabled] .btn-default:active,

.btn-default.disabled.active,

.btn-default[disabled].active,

fieldset[disabled] .btn-default.active { background-color: #fff; border-color: #ccc; }

.btn-default .badge { color: #fff; background-color: #333; }

//默认按钮

.btn-primary { color: #fff; background-color: #428bca; border-color: #357ebd; }

.btn-primary:hover,

.btn-primary:focus,

.btn-primary.focus,

.btn-primary:active,

.btn-primary.active,

.open > .dropdown-toggle.btn-primary { color: #fff; background-color: #3071a9; border-color: #285e8e; }

.btn-primary:active,

.btn-primary.active,

.open > .dropdown-toggle.btn-primary { background-image: none; }

.btn-primary.disabled,

.btn-primary[disabled],

fieldset[disabled] .btn-primary,

.btn-primary.disabled:hover,

.btn-primary[disabled]:hover,

fieldset[disabled] .btn-primary:hover,

.btn-primary.disabled:focus,

.btn-primary[disabled]:focus,

fieldset[disabled] .btn-primary:focus,

.btn-primary.disabled.focus,

.btn-primary[disabled].focus,

fieldset[disabled] .btn-primary.focus,

.btn-primary.disabled:active,

.btn-primary[disabled]:active,

fieldset[disabled] .btn-primary:active,

.btn-primary.disabled.active,

.btn-primary[disabled].active,

fieldset[disabled] .btn-primary.active { background-color: #428bca; border-color: #357ebd; }

.btn-primary .badge { color: #428bca; background-color: #fff; }

//原始按钮

.btn-success { color: #fff; background-color: #5cb85c; border-color: #4cae4c; }

.btn-success:hover,

.btn-success:focus,

.btn-success.focus,

.btn-success:active,

.btn-success.active,

.open > .dropdown-toggle.btn-success { color: #fff; background-color: #449d44; border-color: #398439; }

.btn-success:active,

.btn-success.active,

.open > .dropdown-toggle.btn-success { background-image: none; }

.btn-success.disabled,

.btn-success[disabled],

fieldset[disabled] .btn-success,

.btn-success.disabled:hover,

.btn-success[disabled]:hover,

fieldset[disabled] .btn-success:hover,

.btn-success.disabled:focus,

.btn-success[disabled]:focus,

fieldset[disabled] .btn-success:focus,

.btn-success.disabled.focus,

.btn-success[disabled].focus,

fieldset[disabled] .btn-success.focus,

.btn-success.disabled:active,

.btn-success[disabled]:active,

fieldset[disabled] .btn-success:active,

.btn-success.disabled.active,

.btn-success[disabled].active,

fieldset[disabled] .btn-success.active { background-color: #5cb85c; border-color: #4cae4c; }

.btn-success .badge { color: #5cb85c; background-color: #fff; }

//表示成功的按钮

.btn-info { color: #fff; background-color: #5bc0de; border-color: #46b8da; }

.btn-info:hover,

.btn-info:focus,

.btn-info.focus,

.btn-info:active,

.btn-info.active,

.open > .dropdown-toggle.btn-info { color: #fff; background-color: #31b0d5; border-color: #269abc; }

.btn-info:active,

.btn-info.active,

.open > .dropdown-toggle.btn-info { background-image: none; }

.btn-info.disabled,

.btn-info[disabled],

fieldset[disabled] .btn-info,

.btn-info.disabled:hover,

.btn-info[disabled]:hover,

fieldset[disabled] .btn-info:hover,

.btn-info.disabled:focus,

.btn-info[disabled]:focus,

fieldset[disabled] .btn-info:focus,

.btn-info.disabled.focus,

.btn-info[disabled].focus,

fieldset[disabled] .btn-info.focus,

.btn-info.disabled:active,

.btn-info[disabled]:active,

fieldset[disabled] .btn-info:active,

.btn-info.disabled.active,

.btn-info[disabled].active,

fieldset[disabled] .btn-info.active { background-color: #5bc0de; border-color: #46b8da; }

.btn-info .badge { color: #5bc0de; background-color: #fff; }

//提示信息的按钮

.btn-warning { color: #fff; background-color: #f0ad4e; border-color: #eea236; }

.btn-warning:hover,

.btn-warning:focus,

.btn-warning.focus,

.btn-warning:active,

.btn-warning.active,

.open > .dropdown-toggle.btn-warning { color: #fff; background-color: #ec971f; border-color: #d58512; }

.btn-warning:active,

.btn-warning.active,

.open > .dropdown-toggle.btn-warning { background-image: none; }

.btn-warning.disabled,

.btn-warning[disabled],

fieldset[disabled] .btn-warning,

.btn-warning.disabled:hover,

.btn-warning[disabled]:hover,

fieldset[disabled] .btn-warning:hover,

.btn-warning.disabled:focus,

.btn-warning[disabled]:focus,

fieldset[disabled] .btn-warning:focus,

.btn-warning.disabled.focus,

.btn-warning[disabled].focus,

fieldset[disabled] .btn-warning.focus,

.btn-warning.disabled:active,

.btn-warning[disabled]:active,

fieldset[disabled] .btn-warning:active,

.btn-warning.disabled.active,

.btn-warning[disabled].active,

fieldset[disabled] .btn-warning.active { background-color: #f0ad4e; border-color: #eea236; }

.btn-warning .badge { color: #f0ad4e; background-color: #fff; }

//表示警告按钮

.btn-danger { color: #fff; background-color: #d9534f; border-color: #d43f3a; }

.btn-danger:hover,

.btn-danger:focus,

.btn-danger.focus,

.btn-danger:active,

.btn-danger.active,

.open > .dropdown-toggle.btn-danger { color: #fff; background-color: #c9302c; border-color: #ac2925; }

.btn-danger:active,

.btn-danger.active,

.open > .dropdown-toggle.btn-danger { background-image: none; }

.btn-danger.disabled,

.btn-danger[disabled],

fieldset[disabled] .btn-danger,

.btn-danger.disabled:hover,

.btn-danger[disabled]:hover,

fieldset[disabled] .btn-danger:hover,

.btn-danger.disabled:focus,

.btn-danger[disabled]:focus,

fieldset[disabled] .btn-danger:focus,

.btn-danger.disabled.focus,

.btn-danger[disabled].focus,

fieldset[disabled] .btn-danger.focus,

.btn-danger.disabled:active,

.btn-danger[disabled]:active,

fieldset[disabled] .btn-danger:active,

.btn-danger.disabled.active,

.btn-danger[disabled].active,

fieldset[disabled] .btn-danger.active { background-color: #d9534f; border-color: #d43f3a; }

.btn-danger .badge { color: #d9534f; background-color: #fff; }

//表示危险按钮

.btn-link { font-weight: normal; color: #428bca; border-radius: 0; }

.btn-link,

.btn-link:active,

.btn-link.active,

.btn-link[disabled],

fieldset[disabled] .btn-link { background-color: transparent; -webkit-box-shadow: none; box-shadow: none; }

.btn-link,

.btn-link:hover,

.btn-link:focus,

.btn-link:active { border-color: transparent; }

.btn-link:hover,

.btn-link:focus { color: #2a6496; text-decoration: underline; background-color: transparent; }

.btn-link[disabled]:hover,

fieldset[disabled] .btn-link:hover,

.btn-link[disabled]:focus,

fieldset[disabled] .btn-link:focus { color: #777; text-decoration: none; }

//链接按钮

.btn-lg,

.btn-group-lg > .btn { padding: 10px 16px; font-size: 18px; line-height: 1.33; border-radius: 6px; }

.btn-sm,

.btn-group-sm > .btn { padding: 5px 10px; font-size: 12px; line-height: 1.5; border-radius: 3px; }

.btn-xs,

.btn-group-xs > .btn { padding: 1px 5px; font-size: 12px; line-height: 1.5; border-radius: 3px; }

//按钮尺寸

.btn-block { display: block; width: 100%; }

.btn-block + .btn-block { margin-top: 5px; }

input[type="submit"].btn-block,

input[type="reset"].btn-block,

input[type="button"].btn-block { width: 100%; }

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