今日的CSS小案例-阿里云开发者社区

今天需要做的是原神的手风琴，看其他挺好玩，我就做了一个

点击之后实现悬浮效果，看起来挺好看的，然后让咱们一起来设置

架构

这个布局相对于简单一点，有一个大盒子shell

里面放了一个版心card

然后把图片放盒子里面

下面的文字放另外一张盒子里面

 <div class="shell">
            <div class="card">
                <div class="box">
                    <img src="./img/1.png" />
                </div>
                <div class="character">
                    <img src="./img/1.png" />
                </div>
                <h4>凝光</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/3.png" />
                </div>
                <div class="character">
                    <img src="./img/3.png" />
                </div>
                <h4>多莉</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/4.png" />
                </div>
                <div class="character">
                    <img src="./img/4.png" />
                </div>
                <h4>刻晴</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/5.png" />
                </div>
                <div class="character">
                    <img src="./img/5.png" />
                </div>
                <h4>七七</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/6.png" />
                </div>
                <div class="character">
                    <img src="./img/6.png" />
                </div>
                <h4>纳西妲</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/8.png" />
                </div>
                <div class="character">
                    <img src="./img/8.png" />
                </div>
                <h4>雷电将军</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/7.png" />
                </div>
                <div class="character">
                    <img src="./img/7.png" />
                </div>
                <h4>可莉</h4>
            </div>
            <div class="card">
                <div class="box">
                    <img src="./img/10.png" />
                </div>
                <div class="character">
                    <img src="./img/10.png" />
                </div>
                <h4>芭芭拉</h4>
            </div>
        </div>

简单介绍一下架构之后，接下展示css代码，里面大量运用到了子集选择器，伪类选择器

介绍一下子集选择器><是指选择这个内容里面单独的内容

还是老规矩清除默认边距然后在加上css3盒子模型

给body设置弹性布局，然后缩放盒子大小，加上背景颜色，基本的样式就完成

然后其他的我相信大家都应该清除差不多了，不懂的再去查查资料这里就重点讲几个标签

今天的练习中遇到的两个新标签

object-fit 属性用于指定应如何调整 <img> 或 <video> 的大小以适合其容器。

这个属性告诉内容以不同的方式填充容器。比如“保留长宽比”或者“展开并占用尽可能多的空间

cube-bezier() 函数定义三次贝塞尔曲线（Cubic Bezier curve）。

三次贝塞尔曲线由 P0、P1、P2 和 P3 四个点进行定义。P0 和 P3 是曲线的起点和终点，在 CSS 中，这两个点是固定的，因为坐标是成比例。P0 为 (0, 0)，代表初始时间和初始状态，P3 为 (1, 1)，代表最终时间和最终状态。

伪类的话不用我多说了吧，详细情况还是查看W3C

这里是css代码

* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            min-height: 100vh;
            overflow: hidden;
            display: flex;
            justify-content: center;
            align-items: center;
            background-image: linear-gradient(120deg,#e0c3fc 0%,#8ec5fc 100%);
             background-size: cover;
        }
        .shell{
            width: 1700px;
            margin: 0 auto;
            margin-top: 5rem;
            height: 750px;
            display: flex;
        }
        .card{
            flex-basis: 13%;
            position: relative;
            overflow: hidden;
        }
        .card:not(:nth(1)){
            margin-left: 20px;
        }
        .card:hover{
            overflow: initial;
        }
        .box{
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            transition:  all .1s cubic-bezier(0.165,0.84,0.44,1);
            overflow: hidden;
            border-radius: 10px;
            background-image: linear-gradient(100deg,#a18cd1,#fcaa55c,#141414ce);
        }
        .box>img{
            object-fit: contain;
            width: 100%;
            height: 100%;
            transform: translate(-50%,10% ) scale(3);
            position: relative;
            z-index: -1;
        }
        .card:hover>.box img{
            opacity: 0;
        }
        .card:hover>.box{
            transform: scaleY(1.5);
            background-image: initial;
            background-color: #7d419f;
            z-index: 2;
            cursor: pointer;
        }
        .card>h4{
            position: absolute;
            display: block;
            width: 120px;
            text-align: center;
            color: rgba(255,255,255,0.2);
            bottom: 0;
            left: 50%;
            transform: translate(-50%, -35%);
            font-size: 28px;
            z-index: 100;
            transition: .2s;
        }
        .card:hover h4{
            color: #fff;
            transform: translate(-50%,250%);
        }
        .card:hover .character>img{
            opacity: 1;
        }
        .card>.character{
            position: absolute;
            top: -100px;
            left: -400px;
            width: 100%;
            height: 100%;
            z-index: 3;
            pointer-events: none;
        }
        .character>img{
            width: 820px;
            height: 820px;
            object-fit: contain;
            opacity: 0;
            transition: all .3s;
            position: relative;
            z-index: -10;
        }

这里提供源码，大家可以尝试一边理解一边来写哦，嘻嘻

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title></title>
    <style type="text/css">
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    body {
        min-height: 100vh;
        overflow: hidden;
        display: flex;
        justify-content: center;
        align-items: center;
      background-image: linear-gradient(120deg,#e0c3fc 0%,#8ec5fc 100%);
       background-size: cover;
    }
    .shell{
      width: 1700px;
      margin: 0 auto;
      margin-top: 5rem;
      height: 750px;
      display: flex;
    }
    .card{
      flex-basis: 13%;
      position: relative;
      overflow: hidden;
    }
    .card:not(:nth(1)){
      margin-left: 20px;
    }
    .card:hover{
      overflow: initial;
    }
    .box{
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      transition:  all .1s cubic-bezier(0.165,0.84,0.44,1);
      overflow: hidden;
      border-radius: 10px;
      background-image: linear-gradient(100deg,#a18cd1,#fcaa55c,#141414ce);
    }
    .box>img{
      object-fit: contain;
      width: 100%;
      height: 100%;
      transform: translate(-50%,10% ) scale(3);
      position: relative;
      z-index: -1;
    }
    .card:hover>.box img{
      opacity: 0;
    }
    .card:hover>.box{
      transform: scaleY(1.5);
      background-image: initial;
      background-color: #7d419f;
      z-index: 2;
      cursor: pointer;
    }
    .card>h4{
      position: absolute;
      display: block;
      width: 120px;
      text-align: center;
      color: rgba(255,255,255,0.2);
      bottom: 0;
      left: 50%;
      transform: translate(-50%, -35%);
      font-size: 28px;
      z-index: 100;
      transition: .2s;
    }
    .card:hover h4{
      color: #fff;
      transform: translate(-50%,250%);
    }
    .card:hover .character>img{
      opacity: 1;
    }
    .card>.character{
      position: absolute;
      top: -100px;
      left: -400px;
      width: 100%;
      height: 100%;
      z-index: 3;
      pointer-events: none;
    }
    .character>img{
      width: 820px;
      height: 820px;
      object-fit: contain;
      opacity: 0;
      transition: all .3s;
      position: relative;
      z-index: -10;
    }
    </style>
  </head>
  <body>
      <div class="shell">
          <div class="card">
              <div class="box">
                  <img src="./img/1.png" />
              </div>
              <div class="character">
                  <img src="./img/1.png" />
              </div>
              <h4>凝光</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/3.png" />
              </div>
              <div class="character">
                  <img src="./img/3.png" />
              </div>
              <h4>多莉</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/4.png" />
              </div>
              <div class="character">
                  <img src="./img/4.png" />
              </div>
              <h4>刻晴</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/5.png" />
              </div>
              <div class="character">
                  <img src="./img/5.png" />
              </div>
              <h4>七七</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/6.png" />
              </div>
              <div class="character">
                  <img src="./img/6.png" />
              </div>
              <h4>纳西妲</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/8.png" />
              </div>
              <div class="character">
                  <img src="./img/8.png" />
              </div>
              <h4>雷电将军</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/7.png" />
              </div>
              <div class="character">
                  <img src="./img/7.png" />
              </div>
              <h4>可莉</h4>
          </div>
          <div class="card">
              <div class="box">
                  <img src="./img/10.png" />
              </div>
              <div class="character">
                  <img src="./img/10.png" />
              </div>
              <h4>芭芭拉</h4>
          </div>
      </div>
  </body>
  </body>
</html>

今日的CSS小案例

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