CSS로 반응형 가격표를 만드는 방법은 무엇입니까?

CSS로 반응형 가격표를 생성하기 위한 코드는 다음과 같습니다 -

예시

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<style>
   * {
      box-sizing: border-box;
   }
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .compareFields {
      float: left;
      width: 50%;
      padding: 8px;
   }
   li {
      font-size: 18px;
      font-weight: 500;
   }
   .pricing {
      list-style-type: none;
      border: 1px solid #eee;
      margin: 0;
      padding: 0;
      -webkit-transition: 0.3s;
      transition: 0.3s;
   }
   .pricing:hover {
      box-shadow: 0 8px 12px 0 rgba(0, 0, 0, 0.2);
   }
   .pricing .header {
      background-color: rgb(52, 31, 129);
      color: white;
      font-size: 25px;
   }
   .pricing li {
      border-bottom: 1px solid #eee;
      padding: 20px;
      text-align: center;
   }
   .button {
      border: none;
      color: white;
      padding: 10px 25px;
      text-align: center;
      text-decoration: none;
      font-size: 18px;
   }
   @media only screen and (max-width: 600px) {
      .compareFields {
         width: 100%;
      }
   }
</style>
</head>
<body>
<h1 style="text-align:center">Responsive Pricing Tables Example</h1>
<div class="compareFields">
<ul class="pricing">
<li class="header">Free Membership</li>
<li>20 messages</li>
<li>No customer Support</li>
<li>98% uptime</li>
<li>1GB per day</li>
<li>50GB storage</li>
<li>
<a href="#" class="button" style="background-color: rgb(52, 31, 129);">Register</a>
</li>
</ul>
</div>
<div class="compareFields">
<ul class="pricing">
<li class="header" style="background-color:rgb(250, 136, 59)">
Advanced Membership
</li>
<li>100 messages</li>
<li>24 * 7 customer support</li>
<li>99.9% uptime</li>
<li>8GB per day</li>
<li>150GB storage</li>
<li>
<a href="#" class="button" style="background-color:rgb(250, 136, 59)">Register</a>
</li>
</ul>
<div>
</body>
</html>