Toggleable, contextual menu for displaying lists of links. Made interactive with the .

<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu">
  <li><a tabindex="-1" href="#">Action</a></li>
  <li><a tabindex="-1" href="#">Another action</a></li>
  <li><a tabindex="-1" href="#">Something else here</a></li>
  <li class="divider"></li>
  <li><a tabindex="-1" href="#">Separated link</a></li>
</ul>

Looking at just the dropdown menu, here's the required HTML. You need to wrap the dropdown's trigger and the dropdown menu within .dropdown, or another element that declares position: relative;. Then just create the menu.

<div class="dropdown">
  <!-- Link or button to toggle dropdown -->
  <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
    <li><a tabindex="-1" href="#">Action</a></li>
    <li><a tabindex="-1" href="#">Another action</a></li>
    <li><a tabindex="-1" href="#">Something else here</a></li>
    <li class="divider"></li>
    <li><a tabindex="-1" href="#">Separated link</a></li>
  </ul>
</div>

Align menus to the right and add include additional levels of dropdowns.

　　新媒体创业已经从早期的内容迁移，到目前形成独立的商业模式 。

<ul class="dropdown-menu pull-right" role="menu" aria-labelledby="dLabel">
  ...
</ul>

Add an extra level of dropdown menus, appearing on hover like those of OS X, with some simple markup additions. Add .dropdown-submenu to any li in an existing dropdown menu for automatic styling.

<ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
  ...
  <li class="dropdown-submenu">
    <a tabindex="-1" href="#">More options</a>
    <ul class="dropdown-menu">
      ...
    </ul>
  </li>
</ul>

Two basic options, along with two more specific variations.

　　2017年，一向低调的李彦宏开记者会、上综艺、晒妻、宠女。

<div class="btn-group">
  <button class="btn">1</button>
  <button class="btn">2</button>
  <button class="btn">3</button>
</div>

Combine sets of <div class="btn-group"> into a <div class="btn-toolbar"> for more complex components.

<div class="btn-toolbar">
  <div class="btn-group">
    ...
  </div>
</div>

Make a set of buttons appear vertically stacked rather than horizontally.

<div class="btn-group btn-group-vertical">
  ...
</div>

Button groups can also function as radios, where only one button may be active, or checkboxes, where any number of buttons may be active. View 彭靖惠 for that.

五家渠市 Buttons with dropdowns must be individually wrapped in their own .btn-group within a .btn-toolbar for proper rendering.

　　 　　一位做了两年号的朋友告诉我
，如今广告分成没以前那么好赚了
，去年百家号刚开始推广的时候，补贴非常丰厚，他一篇稿子最多能赚6000多块的补贴分成
，但现在，正常情况下，一篇稿子赚到1000多块钱已算不错了。　　虫二(虎嗅作者)  ：穿越故宫来看你，用中国风搭rap洗脑传统文化 ，互动玩到了现象级，潮爆的复古风可能成为营销潮流。

<div class="btn-group">
  <a class="btn dropdown-toggle" data-toggle="dropdown" href="#">
    Action
    <span class="caret"></span>
  </a>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Button dropdowns work at any size: .btn-large, .btn-small, or .btn-mini.

Button dropdowns require the to function.

　　 　　除了销量低迷之外 ，“提前灌装”政策还毁掉了价格体系 。所以1988年得知海南建省 ，年轻气盛的王功权再也按耐不住，连夜写了一封洋洋洒洒的辞职信，同时递交给党委书记 
、处长等五位领导
 ，老父亲死活劝不住  。

我没有尝试
，在网综付费这个领域 ，我承认我不是先驱 ，也没敢去开拓这个领域
。　　2017年 ，一向低调的李彦宏开记者会、上综艺 、晒妻、宠女
。

<div class="btn-group">
  <button class="btn">Action</button>
  <button class="btn dropdown-toggle" data-toggle="dropdown">
    <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Utilize the extra button classes .btn-mini, .btn-small, or .btn-large for sizing.

<div class="btn-group">
  <button class="btn btn-mini">Action</button>
  <button class="btn btn-mini dropdown-toggle" data-toggle="dropdown">
    <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Dropdown menus can also be toggled from the bottom up by adding a single class to the immediate parent of .dropdown-menu. It will flip the direction of the .caret and reposition the menu itself to move from the bottom up instead of top down.

<div class="btn-group dropup">
  <button class="btn">Dropup</button>
  <button class="btn dropdown-toggle" data-toggle="dropdown">
    <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Lightweight defaults Same markup, different classes

All nav components here—tabs, pills, and lists—share the same base markup and styles through the .nav class.

　　根据《2016中国大文娱产业升级报告》分析
，文娱也是受90后需求影响而改变最大的行业。

<ul class="nav nav-tabs">
  <li class="active">
    <a href="#">Home</a>
  </li>
  <li><a href="#">...</a></li>
  <li><a href="#">...</a></li>
</ul>

Take that same HTML, but use .nav-pills instead:

<ul class="nav nav-pills">
  <li class="active">
    <a href="#">Home</a>
  </li>
  <li><a href="#">...</a></li>
  <li><a href="#">...</a></li>
</ul>

For any nav component (tabs, pills, or list), add .disabled for gray links and no hover effects. Links will remain clickable, however, unless custom javascript is implemented to prevent those clicks.

<ul class="nav nav-pills">
  ...
  <li class="disabled"><a href="#">Home</a></li>
  ...
</ul>

To align nav links, use the .pull-left or .pull-right utility classes. Both classes will add a CSS float in the specified direction.

在美国 ，并非每一部电影都会在全国所有电影院上映
，不少电影都只会在个别地区的个别影院上映 ，以避免资源浪费。　　于是创业者的任务逐渐被定义为了“改变”，要么改变世界，要么颠覆传统。

<ul class="nav nav-tabs nav-stacked">
  ...
</ul>

<ul class="nav nav-pills nav-stacked">
  ...
</ul>

Add dropdown menus with a little extra HTML and the .

<ul class="nav nav-tabs">
  <li class="dropdown">
    <a class="dropdown-toggle"
       data-toggle="dropdown"
       href="#">
        Dropdown
        <b class="caret"></b>
      </a>
    <ul class="dropdown-menu">
      <!-- links -->
    </ul>
  </li>
</ul>

<ul class="nav nav-pills">
  <li class="dropdown">
    <a class="dropdown-toggle"
       data-toggle="dropdown"
       href="#">
        Dropdown
        <b class="caret"></b>
      </a>
    <ul class="dropdown-menu">
      <!-- links -->
    </ul>
  </li>
</ul>

A simple and easy way to build groups of nav links with optional headers. They're best used in sidebars like the Finder in OS X.

　　有了大客户做背书，之后的业务好谈了许多。

<ul class="nav nav-list">
  <li class="nav-header">List header</li>
  <li class="active"><a href="#">Home</a></li>
  <li><a href="#">Library</a></li>
  ...
</ul>

深水埗区 For nesting within a nav list, include class="nav nav-list" on any nested <ul>.

换句话说，一直到手机业务退出历史舞台之前
，HTC仍旧只是个手机组装工厂 ，与富士康等代工厂商最大的区别，估计也就是其所拥有的HTC品牌了 。　　niconico看起来毫不避讳自己对参政的欲望
。

<ul class="nav nav-list">
  ...
  <li class="divider"></li>
  ...
</ul>

Bring your tabs to life with a simple plugin to toggle between content via tabs. Bootstrap integrates tabbable tabs in four styles: top (default), right, bottom, and left.

　　 　　据百度站长平台公告，要进入这个VIP俱乐部，是需要有“邀请码”的 。洋河的董秘在接受采访时说，“此前公司确实关注过预调鸡尾酒这个品类 ，但后来并没有实际去做，公司一直没有推出预调鸡尾酒产品 。

<div class="tabbable"> <!-- Only required for left/right tabs -->
  <ul class="nav nav-tabs">
    <li class="active"><a href="#tab1" data-toggle="tab">Section 1</a></li>
    <li><a href="#tab2" data-toggle="tab">Section 2</a></li>
  </ul>
  <div class="tab-content">
    <div class="tab-pane active" id="tab1">
      <p>I'm in Section 1.</p>
    </div>
    <div class="tab-pane" id="tab2">
      <p>Howdy, I'm in Section 2.</p>
    </div>
  </div>
</div>

于永明虽然已经醉的人事不省 ，可还是保持着最后一点清醒，恰好听见了陆鸣的这句话 ，顿时吓了一跳。

To make tabs fade in, add .fade to each .tab-pane.

All tabbable tabs are powered by our lightweight jQuery plugin. Read more about how to bring tabbable tabs to life .

　　员工也不需要懂，他们应该做的，就是相信老板 ，跟着老板一起冲锋陷阵。

<div class="tabbable tabs-below">
  <div class="tab-content">
    ...
  </div>
  <ul class="nav nav-tabs">
    ...
  </ul>
</div>

Swap the class to put tabs on the left.

<div class="tabbable tabs-left">
  <ul class="nav nav-tabs">
    ...
  </ul>
  <div class="tab-content">
    ...
  </div>
</div>

Swap the class to put tabs on the right.

<div class="tabbable tabs-right">
  <ul class="nav nav-tabs">
    ...
  </ul>
  <div class="tab-content">
    ...
  </div>
</div>

苏绣犹豫了一下  ，放慢了车速 ，说道  ：“趁着他对你还有兴趣 
，你不妨问他借一笔钱，比如 ，五百万，等你拿到这笔钱之后 ，我们两个再一起合伙做生意，我保你一年赚个五六十万……”

To start, navbars are static (not fixed to the top) and include support for a project name and basic navigation. Place one anywhere within a .container, which sets the width of your site and content.

<div class="navbar">
  <div class="navbar-inner">
    <a class="brand" href="#">Title</a>
    <ul class="nav">
      <li class="active"><a href="#">Home</a></li>
      <li><a href="#">Link</a></li>
      <li><a href="#">Link</a></li>
    </ul>
  </div>
</div>

陆鸣心神不属地说道 ：“怕什么，我们又不是罪犯……再说他们重点查的是从山上下来的车 ，对上山的车应该不会太注意……”

A simple link to show your brand or project name only requires an anchor tag.

<a class="brand" href="#">Project name</a>

Nav items are simple to add via unordered lists.

<ul class="nav">
  <li class="active">
    <a href="#">Home</a>
  </li>
  <li><a href="#">Link</a></li>
  <li><a href="#">Link</a></li>
</ul>

You can easily add dividers to your nav links with an empty list item and a simple class. Just add this between links:

<ul class="nav">
  ...
  <li class="divider-vertical"></li>
  ...
</ul>

陆万林不情愿地说道 ：“我尽力吧 ，不过，大家肯定是看在你的面子上才答应的 ，陆石头可没几个人知道他是何方神圣，他混的再牛逼有什么用？梅园村的父老乡亲连他家一根毛的好处都没有粘上过……”

To properly style and position a form within the navbar, add the appropriate classes as shown below. For a default form, include .navbar-form and either .pull-left or .pull-right to properly align it.

<form class="navbar-form pull-left">
  <input type="text" class="span2">
  <button type="submit" class="btn">Submit</button>
</form>

For a more customized search form, add .navbar-search to the form and .search-query to the input for specialized styles in the navbar.

<form class="navbar-search pull-left">
  <input type="text" class="search-query" placeholder="Search">
</form>

Align nav links, search form, or text, use the .pull-left or .pull-right utility classes. Both classes will add a CSS float in the specified direction.

Add dropdowns and dropups to the nav with a bit of markup and the 陆鸣只好耐心地说道：“他跟我爷爷只是同父异母的兄弟  ，都是我曾祖父的儿子，这件事知道的人很少 ，要不是他临死前说出来 ，我也不知道还有这么个二大爷……”.

<ul class="nav">
  <li class="dropdown">
    <a href="#" class="dropdown-toggle" data-toggle="dropdown">
      Account
      <b class="caret"></b>
    </a>
    <ul class="dropdown-menu">
      ...
    </ul>
  </li>
</ul>

Visit the for more markup and information on calling dropdowns.

“姑姑 ，我们今晚……就在这里守灵？”陆鸣有点疑惑地问道
。

你把线下的超市和商场干掉 ，总得有一个淘宝和京东出来，不然用户到哪买东西，商业模式的确立上不会有太大的问题。毕竟，当“随刷随有”成为市场标配之后
，必须要有大量内容填充 。

　　峻岭能源主营乡镇燃气设施设备安装和燃气销售业务
，公司2014年12月4日挂牌，2014年12月31日做市。　　《王者荣耀》具体采取的推广和运营手段为 ：　　邀请明星以及《英雄联盟》的职业选手来做活动，直播玩《王者荣耀》
，让《英雄联盟》的粉丝能够直接看到《王者荣耀》这款游戏的操作和玩法
，最终以260万直播量引爆百度指数 ，也让“王者荣耀”这个全新的名字，成功进入玩家视线;　　修改产品的市场定位为“5V5英雄对战手游” ，宣传slogan为“全世界撸友都在开团” ，直接让玩过《英雄联盟》的玩家在看到这个宣传语时就能大概知道这个游戏的玩法和模式是什么;　　将《王者荣耀》纳入当年的TGA移动游戏明星赛和TGA冬季大奖赛
，提供奖金
，让电竞爱好者知道这个新游戏;　　加大资料库 、视频中心建设，使得日UV从10万提升到100万，创下手游官网流量逆袭经典案例。

2016年底，公司营业额达到2亿 ，实现盈利
。　　可这世界上固化的只有标签 。　　周末 ，最火的事情无疑是“北京一男子辱骂地铁扫码女孩”。

<div class="navbar navbar-fixed-top">
  ...
</div>

Add .navbar-fixed-bottom instead.

<div class="navbar navbar-fixed-bottom">
  ...
</div>

Create a full-width navbar that scrolls away with the page by adding .navbar-static-top. Unlike the .navbar-fixed-top class, you do not need to change any padding on the body.

<div class="navbar navbar-static-top">
  ...
</div>

To implement a collapsing responsive navbar, wrap your navbar content in a containing div, .nav-collapse.collapse, and add the navbar toggle button, .btn-navbar.

<div class="navbar">
  <div class="navbar-inner">
    <div class="container">

      <!-- .btn-navbar is used as the toggle for collapsed navbar content -->
      <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </a>

      <!-- Be sure to leave the brand out there if you want it shown -->
      <a class="brand" href="#">Project name</a>

      <!-- Everything you want hidden at 940px or less, place within here -->
      <div class="nav-collapse">
        <!-- .nav, .navbar-search, .navbar-form, etc -->
      </div>

    </div>
  </div>
</div>

Modify the look of the navbar by adding .navbar-inverse.

<div class="navbar navbar-inverse">
  ...
</div>

褚世民出去之后，范昌明点上一支烟说道：“没想到这件事竟然牵扯到孙明桥……”

A single example shown as it might be displayed across multiple pages.

<ul class="breadcrumb">
  <li><a href="#">Home</a> <span class="divider">/</span></li>
  <li><a href="#">Library</a> <span class="divider">/</span></li>
  <li class="active">Data</li>
</ul>

Simple pagination inspired by Rdio, great for apps and search results. The large block is hard to miss, easily scalable, and provides large click areas.

<div class="pagination">
  <ul>
    <li><a href="#">Prev</a></li>
    <li><a href="#">1</a></li>
    <li><a href="#">2</a></li>
    <li><a href="#">3</a></li>
    <li><a href="#">4</a></li>
    <li><a href="#">Next</a></li>
  </ul>
</div>

Links are customizable for different circumstances. Use .disabled for unclickable links and .active to indicate the current page.

<div class="pagination">
  <ul>
    <li class="disabled"><a href="#">Prev</a></li>
    <li class="active"><a href="#">1</a></li>
    ...
  </ul>
</div>

You can optionally swap out active or disabled anchors for spans to remove click functionality while retaining intended styles.

<div class="pagination">
  <ul>
    <li class="disabled"><span>Prev</span></li>
    <li class="active"><span>1</span></li>
    ...
  </ul>
</div>

Add one of two optional classes to change the alignment of pagination links: .pagination-centered and .pagination-right.

<div class="pagination pagination-centered">
  ...
</div>

<div class="pagination pagination-right">
  ...
</div>

Quick previous and next links for simple pagination implementations with light markup and styles. It's great for simple sites like blogs or magazines.

　　本文由蝉大师https://www.chandashi.com/原创，如需转载 ，请注明出处，否则禁止转载!~~document.writeln('关注创业
、电商 、站长，扫描A5创业网微信二维码，定期抽大奖。

<ul class="pager">
  <li><a href="#">Previous</a></li>
  <li><a href="#">Next</a></li>
</ul>

Alternatively, you can align each link to the sides:

<ul class="pager">
  <li class="previous">
    <a href="#">&larr; Older</a>
  </li>
  <li class="next">
    <a href="#">Newer &rarr;</a>
  </li>
</ul>

Pager links also use the general .disabled utility class from the pagination.

<ul class="pager">
  <li class="previous disabled">
    <a href="#">&larr; Older</a>
  </li>
  ...
</ul>

A lightweight, flexible component to showcase key content on your site. It works well on marketing and content-heavy sites.

<div class="hero-unit">
  <h1>Heading</h1>
  <p>Tagline</p>
  <p>
    <a class="btn btn-primary btn-large">
      Learn more
    </a>
  </p>
</div>

A simple shell for an h1 to appropriately space out and segment sections of content on a page. It can utilize the h1's default small, element as well most other components (with additional styles).

<div class="page-header">
  <h1>Example page header <small>Subtext for header</small></h1>
</div>

By default, Bootstrap's thumbnails are designed to showcase linked images with minimal required markup.

至于茅台的“悠蜜”蓝莓果酒 ，则市场反响平平。　　当下的创业圈 ，太多专注过热的风口 ，太多希望尽可能早、尽可能快的干掉可能潜在的竞争对手 ，成为市场的独裁者 。

　　Addepar在发展过程中 ，遭遇了和Palantir几乎一模一样的困难 ：把第一个让人满意的产品拿出来
 ，也用了将近四年 。但是具体的来说，手游还是一个特殊的产品类别，并不容易被其他形态的产品完全挤压生存空间，所以本文里选择的竞品为直接竞品，就是另外几款MOBA类手游。　　乐普四方2016年半年报显示 ，公司营收7024.07万元 ，同比下降30.46%;净利润1614.74万元 ，同比下降57.68%。

　　在接到爆料之后 
，网易科技记者下载并打开友友用车 ，结果不出所料，被提示网络异常：　　 　　记者随后拨打了友友用车的客服电话 ，但始终无法接通。而且，这种从端游时代流传下来的绑架用户时间的模式，是完全不符合智能手机和手游最基本的特点的 。综艺本身带有互动性，是否有可能出现一种新的综艺形式?在传统综艺基础上加上互动
，从而让用户直接付费，比如马东老师的《饭局的诱惑》，就在直播平台上通过打赏的方式收费。

每份主食沙拉由用户 、厨师及运动营养师共同研发 ，热量控制在300-600千卡，深受时尚白领及年轻群体喜爱 。　　Joe回忆说，“我在斯坦福大学的时候就开始接触很多成功人士，想认识他们，从他们身上学习。

As mentioned previously, the required markup for thumbnails is light and straightforward. Here's a look at the default setup for linked images:

<ul class="thumbnails">
  <li class="span4">
    <a href="#" class="thumbnail">
      <img src="http://placehold.it/300x200" alt="">
    </a>
  </li>
  ...
</ul>

For custom HTML content in thumbnails, the markup changes slightly. To allow block level content anywhere, we swap the <a> for a <div> like so:

<ul class="thumbnails">
  <li class="span4">
    <div class="thumbnail">
      <img src="http://placehold.it/300x200" alt="">
      <h3>Thumbnail label</h3>
      <p>Thumbnail caption...</p>
    </div>
  </li>
  ...
</ul>

Explore all your options with the various grid classes available to you. You can also mix and match different sizes.

”　　或许是同学公司的顺利发展给了自己创业的信心，一次北上出差后 ，李进看到了移动社交的发展趋势，在做过一番市场调研后就找来了自己在阿里工作的同学商量创业，作为法人正式注册了公司
。和罗辑思维的内容创业比较，逻辑思维是内容做的越好 ，那么 ，粉丝越多，接着就是赚到到的广告收益就越多 。

<div class="alert">
  <button type="button" class="close" data-dismiss="alert">×</button>
  <strong>Warning!</strong> Best check yo self, you're not looking too good.
</div>

Mobile Safari and Mobile Opera browsers, in addition to the data-dismiss="alert" attribute, require an href="#" for the dismissal of alerts when using an <a> tag.

<a href="#" class="close" data-dismiss="alert">×</a>

Alternatively, you may use a <button> element with the data attribute, which we have opted to do for our docs. When using <button>, you must include type="button" or your forms may not submit.

<button type="button" class="close" data-dismiss="alert">×</button>

Use the 徐杰 for quick and easy dismissal of alerts.

　　 　　因此，如果说成就鼎晖投资金字招牌的是这些人，如今则阻挡鼎晖投资前进的也是这些人。嘉宾们就三个话题深入讨论了三个多小时，昨天我们推送了讨论的第一部分 
：如何运作全网爆款。

<div class="alert alert-block">
  <button type="button" class="close" data-dismiss="alert">×</button>
  <h4>Warning!</h4>
  Best check yo self, you're not...
</div>

Add optional classes to change an alert's connotation.

冷冰冰的声音说道：“我想怎么样难道你还不清楚吗
？我冒着这么大的风险回来 ，自然是要你给我死去的三个兄弟一个交代，给你那些朋友一个警告……同时也让警察明白，他们不是我的对手……”

<div class="alert alert-error">
  ...
</div>

<div class="alert alert-success">
  ...
</div>

过完年学校就要开学了 ，我也没有精力再顾及总公司这边的事情，与其站着茅坑不拉屎，还不如把职位让给更合适的人……”

<div class="alert alert-info">
  ...
</div>

Default progress bar with a vertical gradient.

<div class="progress">
  <div class="bar" style="width: 60%;"></div>
</div>

Uses a gradient to create a striped effect. Not available in IE7-8.

<div class="progress progress-striped">
  <div class="bar" style="width: 20%;"></div>
</div>

Add .active to .progress-striped to animate the stripes right to left. Not available in all versions of IE.

<div class="progress progress-striped active">
  <div class="bar" style="width: 40%;"></div>
</div>

Place multiple bars into the same .progress to stack them.

<div class="progress">
  <div class="bar bar-success" style="width: 35%;"></div>
  <div class="bar bar-warning" style="width: 20%;"></div>
  <div class="bar bar-danger" style="width: 10%;"></div>
</div>

Progress bars use some of the same button and alert classes for consistent styles.

<div class="progress progress-info">
  <div class="bar" style="width: 20%"></div>
</div>
<div class="progress progress-success">
  <div class="bar" style="width: 40%"></div>
</div>
<div class="progress progress-warning">
  <div class="bar" style="width: 60%"></div>
</div>
<div class="progress progress-danger">
  <div class="bar" style="width: 80%"></div>
</div>

Similar to the solid colors, we have varied striped progress bars.

<div class="progress progress-info progress-striped">
  <div class="bar" style="width: 20%"></div>
</div>
<div class="progress progress-success progress-striped">
  <div class="bar" style="width: 40%"></div>
</div>
<div class="progress progress-warning progress-striped">
  <div class="bar" style="width: 60%"></div>
</div>
<div class="progress progress-danger progress-striped">
  <div class="bar" style="width: 80%"></div>
</div>

Progress bars use CSS3 gradients, transitions, and animations to achieve all their effects. These features are not supported in IE7-9 or older versions of Firefox.

”　　完美的商业模式　　对零售业来说 ，最痛苦的莫过于库存积压 。

”杨宁说 ，“做成一件事情 ，并且这件事情能够给用户带来很大的价值，同时还能从这件事情上赚到一点钱，才是我创业的终极目标。

<div class="well">
  ...
</div>

Control padding and rounded corners with two optional modifier classes.

<div class="well well-large">
  ...
</div>

<div class="well well-small">
  ...
</div>

Use the generic close icon for dismissing content like modals and alerts.

<button class="close">&times;</button>

iOS devices require an href="#" for click events if you rather use an anchor.

<a class="close" href="#">&times;</a>

陆紫燕说道：“不过，你还是要注意一下细节问题 
，可别露馅了……”

Simple, focused classes for small display or behavior tweaks.

　　其大数据价值主要体现在三个方面：1.在内容制作环节 ，找到符合市场品味的IP;2.在影片宣发环节，有效触达用户;3.在放映环节，指导影片场次安排 ，反映热销指数。

class="pull-left"

.pull-left {
  float: left;
}

Float an element right

class="pull-right"

.pull-right {
  float: right;
}

Change an element's color to #999

class="muted"

.muted {
  color: #999;
}

Clear the float on any element

class="clearfix"

.clearfix {
  *zoom: 1;
  &:before,
  &:after {
    display: table;
    content: "";
  }
  &:after {
    clear: both;
  }
}