综合案例-淘宝轮播图

代码👇

<!DOCTYPE html>

<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title>淘宝轮播图</title>
    <style>
        *{
            margin:0px;
            padding:0px;
        }
        .tb-promo {
            position:relative;
            margin: 100px auto;
            width: 360px;
            height: 360px;
        }
        .tb-promo img{

            width:360px;
            height:360px;
        }
        .prev{
            position:absolute;
            left:0;
            top:50%;
            margin-top:-15px;
            width:20px;
            height:20px;
            background-color:rgba(0,0,0,0.3); 
            text-align:center;
            color:white;
            line-height:20px;
            text-decoration:none;
            border-top-right-radius:15px;
            border-bottom-right-radius:15px;
        }


        .aft {
            position: absolute;
            right: 0;
            top: 50%;
            margin-top:-15px;
            width: 20px;
            height: 20px;
            background-color: rgba(0,0,0,0.3);
            text-align: center;
            color: white;
            line-height: 20px;
            text-decoration: none;
            border-top-left-radius: 15px;
            border-bottom-left-radius: 15px;
        }

        .promo-nav {
            position: absolute;
            bottom: 15px;
            left: 50%;/*这个属性是根据position来的，让这个框居中对齐*/
            /*让他在往左偏一点，居中对齐*/ margin-left: -35px;
            width: 70px;
            height: 13px;
            background: rgba(0,0,0,0.5);
            border-radius: 5px;
        }

        .promo-nav li{
            float:left;
            width:8px;
            height:8px;
            background-color:white;
            border-radius:50%;
            margin:3px;
        }

        /*不要忘记权重问题*/
        .promo-nav .selecetd {
            background-color: red;
        }
    </style>
</head>
<body>
    <div class="tb-promo">
        <img src=" https://img.alicdn.com/img/i4/54637139/O1CN01baCcOe22biRppXtSs_!!0-saturn_solar.jpg_360x360xzq75.jpg_.webp" alt="" />
        <div class="prev " href="#"><</div>
        <div class="aft " href="#">></div>

        <ul class="promo-nav">
            <li class="selecetd"></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ul>

    </div>
</body>
</html>