css动画

<template>

<div class="content">
    <div class="item">
        <img src="./1024.png" alt="">
    </div>

    <div class="item">
        <img src="./1024.png" alt="">
        <span class="desc"></span>
    </div>
    <div class="item">
        <img src="./1024.png" alt="">
        <span class="desc"></span>
    </div>
</div>
</template>

<script>

</script>
<style lang="">
        body {
            background-color: #eeeeee;
        }
        .content {
            width: 800px;
            height: 320px;
            padding-left: 20px;
            margin: 80px auto;
        }
        .item {
            width: 230px;
            height: 300px;
            text-align: center;
            margin-right: 20px;
            background-color: #FFF;
            float: left;
            position: relative;
            top: 0;
            overflow: hidden; /* 让溢出的内容隐藏起来。意思是让下方的橙色方形先躲起来 */
            transition: all .5s; /* 从最初到鼠标悬停时的过渡 */
        }

        .item img {
            margin-top: 30px;
        }

        .item .desc {
            position: absolute;
            left: 0;
            bottom: -80px;
            width: 100%;
            height: 80px;
            background-color: #ff6700;
            transition: all .5s;
        }

        /* 鼠标悬停时，让 item 整体往上移动5px，且加一点阴影 */
        .item:hover {
            top: -5px;
            box-shadow: 0 0 15px #AAA;
        }

        /* 鼠标悬停时，让下方的橙色方形现身 */
        .item:hover .desc {
            bottom: 0;
        }
    </style>
<script>
export default {
}
</script>

相关链接：https://blog.youkuaiyun.com/Night_Emperor/article/details/80401115