麻烦老师检查下，代码有哪些地方需要优化的

来源：3-17 编程练习

慕的地9277935

2021-03-23 16:27:55

相关代码：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
     /* 在此处补充代码*/
     * {
         margin: 0;
         padding: 0;
     }
     header {
         display: flex;
         justify-content: space-around;
         align-items: center;
         background-color: #000;
     }
     header .nav {
         list-style: none;
         color: #fff;
         font-size: 24px;
         width: 500px;
         display: flex;
         justify-content: space-around;
     }
     header .login {
         width: 150px;
         display: flex;
         justify-content: space-around;
     }
     header .login input {
         font-size: 20px;
         border: none;
         outline: none;
         background-color: orange;
         color: #fff;
         border-radius: 4px 4px;
         padding: 3px;
         cursor: pointer;
     }
     section {
         display: flex;
         flex-wrap: wrap;
         justify-content: space-around;
         align-content: space-around;
         height: 320px;
         padding-top: 5px;
     }
     section .section {
         width: 45%;
         background-color: rgb(155, 217, 247);
         height: 150px;
         border-radius: 5px;

         display: flex;
         justify-content: space-around;
     }
     section .section .box {
         display: flex;
         flex-direction: column;
         justify-content: space-around;
     }
     section .section .shopping {
         display: flex;
         align-items: center;
     }
     section .section .shopping .btn {
         width: 100px;
         height: 40px;
         line-height: 40px;
         text-align: center;
         background-color: orange;
         color: #fff;
         border-radius: 5px;
         font-weight: bold;
         cursor: pointer;
     }
    </style>
</head>
<body>
<!-- 头部 -->
   <header>
     <div class="logo">
       <img src="http://climg.mukewang.com/59197ab000014f1503000100.jpg" alt="">
     </div>
       <ul class="nav">
         <li>课程</li>
         <li>路径</li>
         <li>猿问</li>
         <li>手记</li>
       </ul>     
     <div class="login">
       <input type="button" value="登录">
       <input type="button" value="注册">
     </div>
   </header>
<!-- 主体内容 -->
   <section>
    <div class="section">
      <div class="box">
        <p>《前端小白入门手册》</p>
        <div>适用人群：没有任何前端基础的小白</div>
        <div>费用：￥499</div>
      </div>
      <div class="shopping">
        <div class="btn">加入购物车</div>
      </div>
    </div>
    <div class="section">
      <div class="box">
        <p>《HTML5月CSS3实现动态网页》</p>
        <div>适用人群：有html和css基础的童鞋</div>
        <div>费用：￥599</div>
      </div>
      <div class="shopping">
        <div class="btn">加入购物车</div>
      </div>
    </div>
    <div class="section">
        <div class="box">
          <p>《HTML5月CSS3实现动态网页》</p>
          <div>适用人群：有html和css基础的童鞋</div>
          <div>费用：￥599</div>
        </div>
        <div class="shopping">
          <div class="btn">加入购物车</div>
        </div>
      </div>
      <div class="section">
        <div class="box">
          <p>《HTML5月CSS3实现动态网页》</p>
          <div>适用人群：有html和css基础的童鞋</div>
          <div>费用：￥599</div>
        </div>
        <div class="shopping">
          <div class="btn">加入购物车</div>
        </div>
      </div>
    </section>  
</body>
</html>