左侧带三角的Card css支持hover阴影

<div class="inputReportIndex">
    <div class="inner">
      <div class="left">
        <Card :bordered="false" style="height: 48%;">1</Card>
        <div style="height: 4%;"></div>
        <Card :bordered="false" style="height: 48%;">1</Card>
      </div>
      <div class="right">
        <Card :bordered="false">
          <!--<div style="background-color: aqua;  100%; height: 100%;"></div>-->
        </Card>
      </div>
    </div>
  </div>

.inputReportIndex {
    display: flex; justify-content: center;align-items: center; 100%; height: 100%;
    .inner {
       88%; height: 88%;
      .left{
         62%;
        height: 100%;
        float: left;
      }
      .right{
         35%;
        height: 100%;
        float: right;
        > .ivu-card {
          height: 100%;
          position: relative;
          > .ivu-card-body {
            height: 100%;
            position: relative;
            z-index: 99;
          }
          &::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 0;
            transform: translate(-50%, -50%) rotate(45deg);
             25px;
            height: 25px;
            background: #fff;
            transition: all 0.2s ease-in-out;
          }
          &:hover::after {
            box-shadow: -2px 2px 4px rgba(0, 0, 0, 0.11);
          }
        }
      }
    }

  }