实例：图片响应式悬停效果

代码

Html代码：

<div class="container">
    <div class="card">
        <div class="imgBx">
            <img src="https://liangxiansheng688.com.cn/1.jpg" alt="">
        </div>
        <div class="content">
            <h2>Card One</h2>
            <p>啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧</p>
        </div>
    </div>
    <div class="card">
        <div class="imgBx">
            <img src="https://liangxiansheng688.com.cn/mainPage/1.jpg" alt="">
        </div>
        <div class="content">
            <h2>Card Two</h2>
            <p>啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧</p>
        </div>
    </div>
    <div class="card">
        <div class="imgBx">
            <img src="https://sch.liangxiansheng688.com.cn:7890/1.jpg" alt="">
        </div>
        <div class="content">
            <h2>Card Three</h2>
            <p>啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧啊吧</p>
        </div>
    </div>
</div>

CSS代码：

* {
    padding: 0;
    margin: 0;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #16384c;
}

.container {
    position: relative;
    width: 1100px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    padding: 30px;
}

.container .card {
    position: relative;
    max-width: 300px;
    height: 215px;
    background: #fff;
    margin: 30px 10px;
    padding: 20px 15px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
    transition: 0.3s ease-in-out;
}

.container .card:hover {
    height: 420px;
}

.container .card .imgBx {
    position: relative;
    width: 260px;
    height: 260px;
    top: -60px;
    left: 20px;
    z-index: 1;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);

}

.container .card .imgBx img {
    max-width: 100%;
    border-radius: 4px;
}

.container .card .content {
    position: relative;
    margin-top: -140px;
    padding: 10px 15px;
    text-align: center;
    color: #111;
    visibility: hidden;
    opacity: 0;
    transition: 0.3s ease-in-out;
}

.container .card:hover .content {
    visibility: visible;
    opacity: 1;
    margin-top: -40px;
    transition-delay: 0.3s;
}