<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <link rel="stylesheet" href="tb.css">
</head>
<body>
  <div class="tb-promo">
      <img src="01.jpg" alt="">
      <a href="#" class="prev"> &lt; </a>
      <a href="#" class="next"> &gt; </a>
      <ul class="promo-nav">
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
      </ul>
  </div>
</body>
</html>
* {
    margin: 0;
    padding: 0;
}
li {
    list-style: none;
}
.tb-promo {
    position: relative;
    width: 520px;
    height: 280px;
    background-color: pink;
    margin: 100px auto;
}
.tb-promo img {
    width: 520px;
    height: 280px;
}
.prev {
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -15px;
    width: 20px;
    height: 30px;
    background-color: rgba(0, 0, 0, .3);
    text-align: center;
    line-height: 30px;
    color: white;
    text-decoration: none;
    border-top-right-radius: 15px;
    border-bottom-right-radius: 15px;
}
.next {
    position: absolute;
    right: 0;
    top: 50%;
    margin-top: -15px;
    width: 20px;
    height: 30px;
    background-color: rgba(0, 0, 0, .3);
    text-align: center;
    line-height: 30px;
    color: white;
    text-decoration: none;
    border-top-left-radius: 15px;
    border-bottom-left-radius: 15px;
}
.promo-nav {
    position: absolute;
    bottom: 10px;
    left: 50%;
    margin-left: -35px;
    width: 70px;
    height: 13px;
    background: rgba(255, 255, 255, .3);
    border-radius: 7px;
}
.promo-nav li {
    float: left;
    width: 8px;
    height: 8px;
    background-color: white;
    border-radius: 50%;
    margin: 3px;
}

内部逻辑是JS代码,在此不做概述。

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