页面的head部分，需远程调用font-awesome图标字体库，并引入页面的样式文件，代码如下：

<link rel='stylesheet prefetch' href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'>
<link type="text/css" rel="stylesheet" href="css/style.css">

页面的body部分，分别在不同的div容器里放入不同的form表单，代码如下：

<div class="form-container">
  <form class="form-1" action="">
    <lable>请输入密码：
      <input class="input-1" type="password" placeholder="&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;">
      </lable>
    <div class="progress-bar_wrap">
      <div class="progress-bar_item progress-bar_item-1"></div>
      <div class="progress-bar_item progress-bar_item-2"></div>
      <div class="progress-bar_item progress-bar_item-3"></div>
    </div>
    <span class="progress-bar_text">空</span>
  </form>
</div>

<div class="form-container">
  <form class="form-2" action="">
    <lable>请输入密码：
      <input class="input-2" type="password" placeholder="&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;">
      </lable>
    <div class="progress-bar_wrap">
      <div class="progress-bar_item progress-bar_item-1"></div>
      <div class="progress-bar_item progress-bar_item-2"></div>
      <div class="progress-bar_item progress-bar_item-3"></div>
    </div>
    <span class="progress-bar_text">空</span>
  </form>
</div>

<div class="form-container">
  <form class="form-3" action="">
    <lable>请输入密码：
      <input class="input-3" type="password" placeholder="&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;">
      </lable>
    <span class="progress-bar_text">空</span>
  </form>
</div>

<div class="form-container">
  <form class="form-4" action="">
    <lable>请输入密码：
      <input class="input-4" type="password" placeholder="&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;">
      </lable>
    <span class="progress-bar_text">空</span>
  </form>
</div>

页面的底部，需远程调用jQuery库，并引入本地JS文件，代码如下：

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>
<script type="text/javascript" src="js/index.js"></script>