引入CSS（base基础样式，index页面样式）：
<link rel="stylesheet" type="text/css" href="style/index.css" > <link rel="stylesheet" type="text/css" href="style/base.css" >
引入jQuery：
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
引入swiper4.0.2版本：
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/Swiper/4.0.2/css/swiper.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/Swiper/4.0.2/js/swiper.js"></script>