Bootstrap4 创建一个网页

<div class="jumbotron text-center" style="margin-bottom:0">
    <h1>我的第一个 Bootstrap 4 页面</h1>
    <p>重置浏览器窗口大小查看效果！</p>
  </div>

  <nav class="navbar navbar-expand-sm bg-dark navbar-dark">
    <a class="navbar-brand" href="#">导航</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="collapsibleNavbar">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link" href="#">链接</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">链接</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">链接</a>
        </li>
      </ul>
    </div>
  </nav>

  <div class="container" style="margin-top:30px">
    <div class="row">
      <div class="col-sm-4">
        <h2>关于我</h2>
        <h5>我的照片:</h5>
        <div class="fakeimg">这边插入图像</div>
        <p>关于我的介绍..</p>
        <h3>一些链接</h3>
        <p>说明文本</p>
        <ul class="nav nav-pills flex-column">
          <li class="nav-item">
            <a class="nav-link active" href="#">激活状态</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">链接</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">链接</a>
          </li>
          <li class="nav-item">
            <a class="nav-link disabled" href="#">禁用</a>
          </li>
        </ul>
        <hr class="d-sm-none">
      </div>
      <div class="col-sm-8">
        <h2>标题</h2>
        <h5>副标题</h5>
        <div class="fakeimg">图像</div>
        <p>一些文本..</p>
        <p>自学教程，runoops 自学教程，runoops 自学教程，runoops 自学教程，runoops 自学教程，</p>
        <br>
        <h2>标题</h2>
        <h5>副标题</h5>
        <div class="fakeimg">图像</div>
        <p>一些文本..</p>
        <p>自学教程，runoops 自学教程，runoops 自学教程，runoops 自学教程，runoops 自学教程，runoops 自学教程</p>
      </div>
    </div>
  </div>

  <div class="jumbotron text-center" style="margin-bottom:0">
    <p>底部内容</p>
  </div>