html5+css如何实现中间大两头小的轮播效果

国际惯例,先上效果

好了,话不多说,上去就是一顿撸。

css:

<style>

   *{margin: 0;padding: 0}
   .wrap{
       
   }
   .container{
       width: 100%;
       overflow: hidden;
       /* height: 400px; */
       background: red;
       position: relative;
   }
   .box{width: 125%;
       height: auto;
       display: flex;
        align-items: center;
        position: relative;
        left: 0;
       }
    .box li{
        width: 20%;
        float: left;
        list-style: none;
        -webkit-transition: width 0.5s, height 0.5s, margin 0.5s;
        position: relative;
    }
    .box video {
        width: 100%;
        height: 100%;
    }
    .box li div {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
    }
    .box li div img {
        width: 100%;
        height: 100%;
    }
    /* .box li:nth-child(2){
        height: 360px;
        margin: 0 1%;
    } */
    .goLeft, .goRight {
        position: absolute;
        width: 28px;
        height: 52px;
        top: 50%;
        transform: translate(0,-50%);
        cursor: pointer;
        border: none;
        outline: none;
        line-height: 52px;
    }
    .goLeft {
        left: 20%;
    }
    .goRight {
        right: 20%;
    }
    .box li>p {
        margin: 0;
        color: #fff;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
        text-align: center;
    }
    .box li>p>span {
        display: inline-block;
        width: 100px;
        height: 100px;
        background: url(play.png);
    }
    .ddd{
        width: 100%;
        height: 360px;
        display: flex;
align-items: center;
position: relative;
    }
    .dd-2{
        width: 20%;
        background: yellow;
    }
    .aa{
        width: 100%;
    }
</style>

html:

<div class="wrap">

    <div class="container">
        <ul class="box">
            <li class="video1">
                <video></video>
                <div><img src=http://www.cppcns.com/web/html5/"3.jpg" alt="">1
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