Bootstrap 布局组件

<button type="button" class="btn btn-default btn-lg">
    <span class="glyphicon glyphicon-user"></span>
</button>
<button type="button" class="btn btn-default btn-lg">
    <span class="glyphicon glyphicon-user"></span> User
</button>

<button type="button" class="btn btn-primary btn-lg" style="font-size: 60px">
  <span class="glyphicon glyphicon-user"></span> User
</button>

<button type="button" class="btn btn-primary btn-lg" style="color: rgb(212, 106, 64);">
  <span class="glyphicon glyphicon-user"></span> User
</button>

<button type="button" class="btn btn-primary btn-lg" style="text-shadow: black 5px 3px 3px;">
  <span class="glyphicon glyphicon-user"></span> User
</button>

<div class="dropdown">
    <button type="button" class="btn dropdown-toggle" id="dropdownMenu1" data-toggle="dropdown">主题
        <span class="caret"></span>
    </button>
    <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
        <li role="presentation" class="dropdown-header">下拉菜单标题</li>
        <li role="presentation">
            <a role="menuitem" tabindex="-1" href="#">Java</a>
        </li>
        <li role="presentation">
            <a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
        </li>
        <li role="presentation">
            <a role="menuitem" tabindex="-1" href="#">数据通信/网络</a>
        </li>
        <li role="presentation" class="divider"></li>
        <li role="presentation" class="dropdown-header">下拉菜单标题</li>
        <li role="presentation">
            <a role="menuitem" tabindex="-1" href="#">分离的链接</a>
        </li>
    </ul>
</div>

<div class="btn-toolbar" role="toolbar">
<div class="btn-group btn-group-lg">
    <button type="button" class="btn btn-default">按钮 1</button>
    <button type="button" class="btn btn-default">按钮 2</button>
    <button type="button" class="btn btn-default">按钮 3</button>
</div>
    <div class="btn-group btn-group-sm">
    <button type="button" class="btn btn-default">按钮 4</button>
    <button type="button" class="btn btn-default">按钮 5</button>
    <button type="button" class="btn btn-default">按钮 6</button>
</div>
    <div class="btn-group btn-group-xs">
    <button type="button" class="btn btn-default">按钮 7</button>
    <button type="button" class="btn btn-default">按钮 8</button>
    <div class="btn-group">
    <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
        下列
        <span class="caret"></span>
    </button>
    <ul class="dropdown-menu">
        <li><a href="#">下拉链接 1</a></li>
        <li><a href="#">下拉链接 2</a></li>
    </ul>
    </div>
</div>
</div>

<div class="btn-group-vertical">
    <button type="button" class="btn btn-default">按钮 1</button>
    <button type="button" class="btn btn-default">按钮 2</button>
    <div class="btn-group-vertical">
    <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
        下拉
        <span class="caret"></span>
    </button>
    <ul class="dropdown-menu">
        <li><a href="#">下拉链接 1</a></li>
        <li><a href="#">下拉链接 2</a></li>
    </ul>
    </div>
</div>