纯CSS实现内容放大缩小效果

先搭架子

再实现第一个内容

填充更多内容

拆掉border，查看最终效果

html代码

<!-- 服务 -->
<div class="service">
    &nbsp;
    <div class="service-title">
        创新服务
    </div>
    <div class="service-container">
        <div class="service-item">
            <div class="service-item-common">
                <div class="service-item-icon">
                    <img src="/Index/Index/image/innovate/yunjisuan.png" alt="">
                </div>
                <div class="service-item-title">
                    云计算平台
                </div>
            </div>

            <div class="service-item-hover">
                <div class="service-item-icon-hover">
                    <img src="/Index/Index/image/innovate/yunjisuan1.png" alt="">
                </div>

                <div class="service-item-title-hover">
                    云计算平台
                </div>

                <div class="service-item-content-hover">
                    <p>SaaS化的电商计算平台</p>
                    <p>提供标准化的服务接口与数据接口<p>
                    <p>电商基础服务产品化<p>
                </div>
            </div>
        </div>
        <div class="service-item">
            <div class="service-item-common">
                <div class="service-item-icon">
                    <img src="/Index/Index/image/innovate/yunshengtai.png" alt="">
                </div>
                <div class="service-item-title">
                    云生态平台
                </div>
            </div>

            <div class="service-item-hover">
                <div class="service-item-icon-hover">
                    <img src="/Index/Index/image/innovate/yunshengtai1.png" alt="">
                </div>

                <div class="service-item-title-hover">
                    云生态平台
                </div>

                <div class="service-item-content-hover">
                    <p>SaaS化的电子商务应用平台</p>
                    <p>面向不同体量级别的品牌客户<p>
                    <p>依照需求制定规划，精简流程<p>
<!--                        <p>优化预算支出与业务能力<p>-->
                </div>
            </div>
        </div>
        <div class="service-item">
            <div class="service-item-common">
                <div class="service-item-icon">
                    <img src="/Index/Index/image/innovate/danao.png" alt="">
                </div>
                <div class="service-item-title">
                    科技大脑
                </div>
            </div>

            <div class="service-item-hover">
                <div class="service-item-icon-hover">
                    <img src="/Index/Index/image/innovate/danao1.png" alt="">
                </div>

                <div class="service-item-title-hover">
                    科技大脑
                </div>

                <div class="service-item-content-hover">
                    <p>用AI技术解决电商场景问题，轻松实现提升</p>
                    <p>基于大数据和深度学习，识别图片、视频中的视觉内容<p>
                    <p>构建知识图谱，挖掘潜在商业机会<p>
                </div>
            </div>
        </div>
        <div class="service-item">
            <div class="service-item-common">
                <div class="service-item-icon">
                    <img src="/Index/Index/image/innovate/dashuju.png" alt="">
                </div>
                <div class="service-item-title">
                    大数据平台
                </div>
            </div>

            <div class="service-item-hover">
                <div class="service-item-icon-hover">
                    <img src="/Index/Index/image/innovate/dashuju1.png" alt="">
                </div>

                <div class="service-item-title-hover">
                    大数据平台
                </div>

                <div class="service-item-content-hover">
                    <p>以核心技术能力为依托，提供数据产品和分析服务</p>
                    <p>AI人工智能决策<p>
<!--                        <p>与国内外知名学府深度合作智能工具<p>-->
                    <p>提升商业效率，开拓业务场景，优化用户体验<p>
                </div>
            </div>
        </div>
    </div>
</div>

css代码

.service {
    height: 608px;
    background-color: #373F5E;
    .service-title {
        font-size: 30px;
        font-weight: bold;
        color: #FFFFFF;
        margin-top: 100px;
        text-align: center;
    }
    .service-container {
        width: 1200px;
        //border:1px solid red;
        margin:0 auto;
        margin-top: 60px;
        display: flex;
        justify-content: center;
        .service-item {
            width: 248px;
            height: 180px;
            //border:1px solid blue;
            margin-top: 60px;
            transition: all 0.4s ease; /* 柔和过渡 */
            background-color: #FFFFFF;
            .service-item-icon {
                display: flex;
                justify-content: center;
                margin-top: 56px;
            }

            .service-item-title {
                font-size: 18px;
                color: #222222;
                text-align: center;
                margin-top: 20px;
            }

            .service-item-hover {
                display: none;
            }
        }
        .service-item:hover {
            //transform: scale(1.66, 1.66); /* 其他元素位移不会变动 */
            width: 450px;
            height: 300px;
            margin-top: 0px;
            .service-item-common {
                display: none;
            }
            .service-item-hover {
                display: block;
                .service-item-icon-hover {
                    display: flex;
                    justify-content: center;
                    margin-top: 52px;
                }

                .service-item-title-hover {
                    font-size: 20px;
                    color: #222222;
                    font-weight: bold;
                    text-align: center;
                    margin-top: 20px;
                }
                .service-item-content-hover {
                    margin-top: 24px;
                    text-align: center;
                    line-height: 32px;
                    font-size: 14px;
                }
            }

        }

        .service-item:nth-child(n+2) {
            margin-left: 2px;
        }
    }
}

这里巧妙的运用了hover属性，结合transition平滑过渡。不需要js，一样可以实现动态效果。