可以使用npm引入包，也可以直接使用CDN

简单用bootstrap搭建一个页面，感受一下bootstrap的便捷

bootstrap基本使用_bootstrap

<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"><!-- 适配移动端 -->
    <title>Bootatrap</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <style type="text/css">
      .starter{
        padding-top: 80px;
        text-align: center;
      }
    </style>
  </head>
  <body>
    <nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
      <div class="container">
        <div class="navbar-header">
          <a href="#" class="navbar-brand">Bootatrap</a>
        </div>
        <div id="navbar" class="collapse navbar-collapse">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Home</a></li>
            <li><a href="#">About</a></li>
            <li><a href="#">Contact</a></li>
          </ul>
        </div>
      </div>
    </nav>
    
    <div class="container">
      <div class="starter">
        <h1>Bootstrap<small>Secondary text</small></h1>
        <p class="lead">Bootstrap 提供了一套响应式、移动设备优先的流式栅格系统，随着屏幕或视口（viewport）尺寸的增加，系统会自动分为最多12列。它包含了易于使用的预定义类，还有强大的mixin 用于生成更具语义的布局。</p>
      </div>
    </div>
    
  </body>
</html>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"><!-- 适配移动端 -->