需要掌握能够搭建起一个 dashboard 的能力, 因为很少有运维开发团队有专职的前端, bootstrap 也要讲个基本法.
SB Admin 2, 一个免费的 bootstrap theme, 4000颗星, 大体看了下, 想要的功能都有, 够用了. 一点点啃下来.
一. 导航栏部分
1. 上边框导航栏
<nav class="navbar navbar-default navbar-static-top" role="navigation" style="margin-bottom: 0">
nav.navbar.navbar-default.navbar-static-top navbar-static-top 是指导航条随页面滚动而消失, navbar-fixed-top 指导航条固定在顶端
nav[role="navigation"] 增强导航条的可访问性
nav[style="margin-bottom: 0"] 设置nav 的下外边距为0
<!-- Navigation --> <nav class="navbar navbar-default navbar-static-top" role="navigation" style="margin-bottom: 0"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="index.html">服务器运维看板</a> </div> <!-- /.navbar-header -->
span.sr-only screen read only 仅供屏幕阅读器
span.icon-bar 是按键中的一条横杠
div.navbar-header 里面包含一个 a.navbar-brand, 用作导航条标题, 显示上字体会更大一号
<ul class="nav navbar-top-links navbar-right"> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#"> <i class="fa fa-envelope fa-fw"></i> <i class="fa fa-caret-down"></i> </a> <ul class="dropdown-menu dropdown-messages"> <li> <a href="#"> <div> <strong>John Smith</strong> <span class="pull-right text-muted"> <em>Yesterday</em> </span> </div> <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div> </a> </li> <li class="divider"></li> <li> <a href="#"> <div> <strong>John Smith</strong> <span class="pull-right text-muted"> <em>Yesterday</em> </span> </div> <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div> </a> </li> <li class="divider"></li> <li> <a href="#"> <div> <strong>John Smith</strong> <span class="pull-right text-muted"> <em>Yesterday</em> </span> </div> <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque eleifend...</div> </a> </li> <li class="divider"></li> <li> <a class="text-center" href="#"> <strong>Read All Messages</strong> <i class="fa fa-angle-right"></i> </a> </li> </ul> <!-- /.dropdown-messages --> </li> ... </ul> <!-- /.navbar-top-links -->
ul.nav.navbar-top-links.navbar-right nav 定义导航链接, navbar-top-links 查不到这个属性, navbar-right 右对齐
li.dropdown 下拉菜单
a[class="dropdown-toggle"][data-toggle="dropdown"][href="#"] 点击即可触发下拉菜单
i.fa.fa-envelop.fa-fw FrontAwesome 图标, fa-fw 固定图标宽度
ul.dropdown-menu.dropdown-messages 下拉菜单
span.pull-right.text-muted span 用来组合行内元素, 以便通过样式来格式化它们, 建议使用"提示"时使用 span 元素, pull-right 右对齐, text-muted 柔和灰
li.divider 分割线
a.text-center 文字居中
2. 侧边框导航栏
<div class="navbar-default sidebar" role="navigation"> <div class="sidebar-nav navbar-collapse"> <ul class="nav" id="side-menu"> <li class="sidebar-search"> <div class="input-group custom-search-form"> <input type="text" class="form-control" placeholder="Search..."> <span class="input-group-btn"> <button class="btn btn-default" type="button"> <i class="fa fa-search"></i> </button> </span> </div> <!-- /input-group --> </li> <li> <a href="index.html"><i class="fa fa-dashboard fa-fw"></i> Dashboard</a> </li> <li> <a href="#"><i class="fa fa-bar-chart-o fa-fw"></i> Charts<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="flot.html">Flot Charts</a> </li> <li> <a href="morris.html">Morris.js Charts</a> </li> </ul> <!-- /.nav-second-level --> </li> <li> <a href="tables.html"><i class="fa fa-table fa-fw"></i> Tables</a> </li> <li> <a href="forms.html"><i class="fa fa-edit fa-fw"></i> Forms</a> </li> <li> <a href="#"><i class="fa fa-wrench fa-fw"></i> UI Elements<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="panels-wells.html">Panels and Wells</a> </li> <li> <a href="buttons.html">Buttons</a> </li> <li> <a href="notifications.html">Notifications</a> </li> <li> <a href="typography.html">Typography</a> </li> <li> <a href="icons.html"> Icons</a> </li> <li> <a href="grid.html">Grid</a> </li> </ul> <!-- /.nav-second-level --> </li> <li> <a href="#"><i class="fa fa-sitemap fa-fw"></i> Multi-Level Dropdown<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="#">Second Level Item</a> </li> <li> <a href="#">Second Level Item</a> </li> <li> <a href="#">Third Level <span class="fa arrow"></span></a> <ul class="nav nav-third-level"> <li> <a href="#">Third Level Item</a> </li> <li> <a href="#">Third Level Item</a> </li> <li> <a href="#">Third Level Item</a> </li> <li> <a href="#">Third Level Item</a> </li> </ul> <!-- /.nav-third-level --> </li> </ul> <!-- /.nav-second-level --> </li> <li> <a href="#"><i class="fa fa-files-o fa-fw"></i> Sample Pages<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="blank.html">Blank Page</a> </li> <li> <a href="login.html">Login Page</a> </li> </ul> <!-- /.nav-second-level --> </li> </ul> </div> <!-- /.sidebar-collapse --> </div> <!-- /.navbar-static-side -->
div.navbar-default.sidebar sidebar 是自定义侧边栏
div.sidebar-nav.navbar-collapse sidebar-nav 自定义侧边栏导航, navbar-collapse navbar-toggle 的 data-target
div.input-group.custom-search-form custom-search-form 疑是 wordpress 的 plugin, 属性可删除
<ul class="nav" id="side-menu"> <li class="sidebar-search"> <div class="input-group custom-search-form"> <input type="text" class="form-control" placeholder="Search..."> <span class="input-group-btn"> <button class="btn btn-default" type="button"> <i class="fa fa-search"></i> </button> </span> </div> <!-- /input-group --> </li>
ul[class="nav"][id="side-menu"] 定义侧边导航栏
li.sidebar-search 应该是为JS 准备的
div.input-group input[type="text"][class="form-control"] 输入框组
span.input-group-btn button[class="btn btn-default"][type="button"] i.fa.fa-search 搜索符号
<li> <a href="index.html"><i class="fa fa-dashboard fa-fw"></i> Dashboard</a> </li> <li> <a href="#"><i class="fa fa-bar-chart-o fa-fw"></i> Charts<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="flot.html">Flot Charts</a> </li> <li> <a href="morris.html">Morris.js Charts</a> </li> </ul> <!-- /.nav-second-level --> </li> <li> <a href="tables.html"><i class="fa fa-table fa-fw"></i> Tables</a> </li> <li> <a href="forms.html"><i class="fa fa-edit fa-fw"></i> Forms</a> </li> <li> <a href="#"><i class="fa fa-wrench fa-fw"></i> UI Elements<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="panels-wells.html">Panels and Wells</a> </li> <li> <a href="buttons.html">Buttons</a> </li> <li> <a href="notifications.html">Notifications</a> </li> <li> <a href="typography.html">Typography</a> </li> <li> <a href="icons.html"> Icons</a> </li> <li> <a href="grid.html">Grid</a> </li> </ul> <!-- /.nav-second-level --> </li> <li> <a href="#"><i class="fa fa-sitemap fa-fw"></i> Multi-Level Dropdown<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="#">Second Level Item</a> </li> <li> <a href="#">Second Level Item</a> </li> <li> <a href="#">Third Level <span class="fa arrow"></span></a> <ul class="nav nav-third-level"> <li> <a href="#">Third Level Item</a> </li> <li> <a href="#">Third Level Item</a> </li> <li> <a href="#">Third Level Item</a> </li> <li> <a href="#">Third Level Item</a> </li> </ul> <!-- /.nav-third-level --> </li> </ul> <!-- /.nav-second-level --> </li> <li> <a href="#"><i class="fa fa-files-o fa-fw"></i> Sample Pages<span class="fa arrow"></span></a> <ul class="nav nav-second-level"> <li> <a href="blank.html">Blank Page</a> </li> <li> <a href="login.html">Login Page</a> </li> </ul> <!-- /.nav-second-level --> </li> </ul>
ul.nav.nav-second-level ul.nav.nav-third-level 的加载是由 JS 控制
至此, 导航栏分析完毕, 原来侧边框导航栏是使用css 排版实现的.
二. 主页面部分
<div id="page-wrapper"> <div class="row"> <div class="col-lg-12"> <h1 class="page-header">Dashboard</h1> </div> <!-- /.col-lg-12 --> </div> <!-- /.row --> <div class="row"> <div class="col-lg-3 col-md-6"> <div class="panel panel-primary"> <div class="panel-heading"> <div class="row"> <div class="col-xs-3"> <i class="fa fa-comments fa-5x"></i> </div> <div class="col-xs-9 text-right"> <div class="huge">26</div> <div>New Comments!</div> </div> </div> </div> <a href="#"> <div class="panel-footer"> <span class="pull-left">View Details</span> <span class="pull-right"><i class="fa fa-arrow-circle-right"></i></span> <div class="clearfix"></div> </div> </a> </div> </div>
div.row 栅格系统的行
h1.page-header 页面标题, 会在网页标题周围增加适当的间距
div.panel.panel-primary 带情景效果的面板, 适用于将某些 dom 内容搁到盒子里
div.panel-heading 面板标题容器, 也可以通过添加设置了 .panel-title 类的 <h1>-<h6> 标签，添加一个预定义样式的标题
div.huge 是自定义大小, 40px
div.panel-footer 面板脚注容器
div.clearfix 清除浮动, 保证两个 span 小屏显示正常
实现方式是, 所有的 panel 搁到一个 row 中, 左边的 panel 设置为 col-lg-8, 右侧的 panel 设置为 col-lg-4
<div class="row"> <div class="col-lg-8"> <div class="panel panel-default"> <div class="panel-heading"> <i class="fa fa-bar-chart-o fa-fw"></i> Area Chart Example <div class="pull-right"> <div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle" data-toggle="dropdown"> Actions <span class="caret"></span> </button> <ul class="dropdown-menu pull-right" role="menu"> <li><a href="#">Action</a> </li> <li><a href="#">Another action</a> </li> <li><a href="#">Something else here</a> </li> <li class="divider"></li> <li><a href="#">Separated link</a> </li> </ul> </div> </div> </div> <!-- /.panel-heading --> <div class="panel-body"> <div id="morris-area-chart"></div> </div> <!-- /.panel-body --> </div> <!-- /.panel -->
绘图可以换成highchart, echart, d3js
<div class="panel panel-default"> <div class="panel-heading"> <i class="fa fa-bar-chart-o fa-fw"></i> Bar Chart Example <div class="pull-right"> <div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle" data-toggle="dropdown"> Actions <span class="caret"></span> </button> <ul class="dropdown-menu pull-right" role="menu"> <li><a href="#">Action</a> </li> <li><a href="#">Another action</a> </li> <li><a href="#">Something else here</a> </li> <li class="divider"></li> <li><a href="#">Separated link</a> </li> </ul> </div> </div> </div> <!-- /.panel-heading --> <div class="panel-body"> <div class="row"> <div class="col-lg-4"> <div class="table-responsive"> <table class="table table-bordered table-hover table-striped"> <thead> <tr> <th>#</th> <th>Date</th> <th>Time</th> <th>Amount</th> </tr> </thead> <tbody> <tr> <td>3326</td> <td>10/21/2013</td> <td>3:29 PM</td> <td>$321.33</td> </tr> <tr> <td>3325</td> <td>10/21/2013</td> <td>3:20 PM</td> <td>$234.34</td> </tr> <tr> <td>3324</td> <td>10/21/2013</td> <td>3:03 PM</td> <td>$724.17</td> </tr> <tr> <td>3323</td> <td>10/21/2013</td> <td>3:00 PM</td> <td>$23.71</td> </tr> <tr> <td>3322</td> <td>10/21/2013</td> <td>2:49 PM</td> <td>$8345.23</td> </tr> <tr> <td>3321</td> <td>10/21/2013</td> <td>2:23 PM</td> <td>$245.12</td> </tr> <tr> <td>3320</td> <td>10/21/2013</td> <td>2:15 PM</td> <td>$5663.54</td> </tr> <tr> <td>3319</td> <td>10/21/2013</td> <td>2:13 PM</td> <td>$943.45</td> </tr> </tbody> </table> </div> <!-- /.table-responsive --> </div> <!-- /.col-lg-4 (nested) --> <div class="col-lg-8"> <div id="morris-bar-chart"></div> </div> <!-- /.col-lg-8 (nested) --> </div> <!-- /.row --> </div> <!-- /.panel-body --> </div> <!-- /.panel -->
div.table-responsive 响应式表格
table.table.table-bordered.table-hover.table-striped table-bordered 边框 table-hover 悬停 table-striped 斑马纹
事件时间线, 这个是非常吸引我的.
<div class="panel panel-default"> <div class="panel-heading"> <i class="fa fa-clock-o fa-fw"></i> Responsive Timeline </div> <!-- /.panel-heading --> <div class="panel-body"> <ul class="timeline"> <li> <div class="timeline-badge"><i class="fa fa-check"></i> </div> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> <p><small class="text-muted"><i class="fa fa-clock-o"></i> 11 hours ago via Twitter</small> </p> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Libero laboriosam dolor perspiciatis omnis exercitationem. Beatae, officia pariatur? Est cum veniam excepturi. Maiores praesentium, porro voluptas suscipit facere rem dicta, debitis.</p> </div> </div> </li> <li class="timeline-inverted"> <div class="timeline-badge warning"><i class="fa fa-credit-card"></i> </div> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Autem dolorem quibusdam, tenetur commodi provident cumque magni voluptatem libero, quis rerum. Fugiat esse debitis optio, tempore. Animi officiis alias, officia repellendus.</p> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Laudantium maiores odit qui est tempora eos, nostrum provident explicabo dignissimos debitis vel! Adipisci eius voluptates, ad aut recusandae minus eaque facere.</p> </div> </div> </li> <li> <div class="timeline-badge danger"><i class="fa fa-bomb"></i> </div> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Repellendus numquam facilis enim eaque, tenetur nam id qui vel velit similique nihil iure molestias aliquam, voluptatem totam quaerat, magni commodi quisquam.</p> </div> </div> </li> <li class="timeline-inverted"> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Voluptates est quaerat asperiores sapiente, eligendi, nihil. Itaque quos, alias sapiente rerum quas odit! Aperiam officiis quidem delectus libero, omnis ut debitis!</p> </div> </div> </li> <li> <div class="timeline-badge info"><i class="fa fa-save"></i> </div> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nobis minus modi quam ipsum alias at est molestiae excepturi delectus nesciunt, quibusdam debitis amet, beatae consequuntur impedit nulla qui! Laborum, atque.</p> <hr> <div class="btn-group"> <button type="button" class="btn btn-primary btn-sm dropdown-toggle" data-toggle="dropdown"> <i class="fa fa-gear"></i> <span class="caret"></span> </button> <ul class="dropdown-menu" role="menu"> <li><a href="#">Action</a> </li> <li><a href="#">Another action</a> </li> <li><a href="#">Something else here</a> </li> <li class="divider"></li> <li><a href="#">Separated link</a> </li> </ul> </div> </div> </div> </li> <li> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sequi fuga odio quibusdam. Iure expedita, incidunt unde quis nam! Quod, quisquam. Officia quam qui adipisci quas consequuntur nostrum sequi. Consequuntur, commodi.</p> </div> </div> </li> <li class="timeline-inverted"> <div class="timeline-badge success"><i class="fa fa-graduation-cap"></i> </div> <div class="timeline-panel"> <div class="timeline-heading"> <h4 class="timeline-title">Lorem ipsum dolor</h4> </div> <div class="timeline-body"> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Deserunt obcaecati, quaerat tempore officia voluptas debitis consectetur culpa amet, accusamus dolorum fugiat, animi dicta aperiam, enim incidunt quisquam maxime neque eaque.</p> </div> </div> </li> </ul> </div> <!-- /.panel-body --> </div> <!-- /.panel --> </div> <!-- /.col-lg-8 -->
li.timeline-inverted 时间线右侧面板, 无 class 属性则默认为左侧面板
<div class="col-lg-4"> <div class="panel panel-default"> <div class="panel-heading"> <i class="fa fa-bell fa-fw"></i> Notifications Panel </div> <!-- /.panel-heading --> <div class="panel-body"> <div class="list-group"> <a href="#" class="list-group-item"> <i class="fa fa-comment fa-fw"></i> New Comment <span class="pull-right text-muted small"><em>4 minutes ago</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-twitter fa-fw"></i> 3 New Followers <span class="pull-right text-muted small"><em>12 minutes ago</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-envelope fa-fw"></i> Message Sent <span class="pull-right text-muted small"><em>27 minutes ago</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-tasks fa-fw"></i> New Task <span class="pull-right text-muted small"><em>43 minutes ago</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-upload fa-fw"></i> Server Rebooted <span class="pull-right text-muted small"><em>11:32 AM</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-bolt fa-fw"></i> Server Crashed! <span class="pull-right text-muted small"><em>11:13 AM</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-warning fa-fw"></i> Server Not Responding <span class="pull-right text-muted small"><em>10:57 AM</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-shopping-cart fa-fw"></i> New Order Placed <span class="pull-right text-muted small"><em>9:49 AM</em> </span> </a> <a href="#" class="list-group-item"> <i class="fa fa-money fa-fw"></i> Payment Received <span class="pull-right text-muted small"><em>Yesterday</em> </span> </a> </div> <!-- /.list-group --> <a href="#" class="btn btn-default btn-block">View All Alerts</a> </div> <!-- /.panel-body --> </div> <!-- /.panel -->
div.list-group 列表组
<div class="panel panel-default"> <div class="panel-heading"> <i class="fa fa-bar-chart-o fa-fw"></i> Donut Chart Example </div> <div class="panel-body"> <div id="morris-donut-chart"></div> <a href="#" class="btn btn-default btn-block">View Details</a> </div> <!-- /.panel-body --> </div> <!-- /.panel -->
<div class="chat-panel panel panel-default"> <div class="panel-heading"> <i class="fa fa-comments fa-fw"></i> Chat <div class="btn-group pull-right"> <button type="button" class="btn btn-default btn-xs dropdown-toggle" data-toggle="dropdown"> <i class="fa fa-chevron-down"></i> </button> <ul class="dropdown-menu slidedown"> <li> <a href="#"> <i class="fa fa-refresh fa-fw"></i> Refresh </a> </li> <li> <a href="#"> <i class="fa fa-check-circle fa-fw"></i> Available </a> </li> <li> <a href="#"> <i class="fa fa-times fa-fw"></i> Busy </a> </li> <li> <a href="#"> <i class="fa fa-clock-o fa-fw"></i> Away </a> </li> <li class="divider"></li> <li> <a href="#"> <i class="fa fa-sign-out fa-fw"></i> Sign Out </a> </li> </ul> </div> </div> <!-- /.panel-heading --> <div class="panel-body"> <ul class="chat"> <li class="left clearfix"> <span class="chat-img pull-left"> <img src="http://placehold.it/50/55C1E7/fff" alt="User Avatar" class="img-circle" /> </span> <div class="chat-body clearfix"> <div class="header"> <strong class="primary-font">Jack Sparrow</strong> <small class="pull-right text-muted"> <i class="fa fa-clock-o fa-fw"></i> 12 mins ago </small> </div> <p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur bibendum ornare dolor, quis ullamcorper ligula sodales. </p> </div> </li> <li class="right clearfix"> <span class="chat-img pull-right"> <img src="http://placehold.it/50/FA6F57/fff" alt="User Avatar" class="img-circle" /> </span> <div class="chat-body clearfix"> <div class="header"> <small class=" text-muted"> <i class="fa fa-clock-o fa-fw"></i> 13 mins ago</small> <strong class="pull-right primary-font">Bhaumik Patel</strong> </div> <p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur bibendum ornare dolor, quis ullamcorper ligula sodales. </p> </div> </li> <li class="left clearfix"> <span class="chat-img pull-left"> <img src="http://placehold.it/50/55C1E7/fff" alt="User Avatar" class="img-circle" /> </span> <div class="chat-body clearfix"> <div class="header"> <strong class="primary-font">Jack Sparrow</strong> <small class="pull-right text-muted"> <i class="fa fa-clock-o fa-fw"></i> 14 mins ago</small> </div> <p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur bibendum ornare dolor, quis ullamcorper ligula sodales. </p> </div> </li> <li class="right clearfix"> <span class="chat-img pull-right"> <img src="http://placehold.it/50/FA6F57/fff" alt="User Avatar" class="img-circle" /> </span> <div class="chat-body clearfix"> <div class="header"> <small class=" text-muted"> <i class="fa fa-clock-o fa-fw"></i> 15 mins ago</small> <strong class="pull-right primary-font">Bhaumik Patel</strong> </div> <p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur bibendum ornare dolor, quis ullamcorper ligula sodales. </p> </div> </li> </ul> </div> <!-- /.panel-body --> <div class="panel-footer"> <div class="input-group"> <input id="btn-input" type="text" class="form-control input-sm" placeholder="Type your message here..." /> <span class="input-group-btn"> <button class="btn btn-warning btn-sm" id="btn-chat"> Send </button> </span> </div> </div> <!-- /.panel-footer --> </div> <!-- /.panel .chat-panel -->
ul.dropdown-menu.slidedown css 中定制了 slidedown
至此, index.html 分析完成.