fix run serve. user npm 7.12.0

zhangzengfei

2021-09-15 829517bc9c6ff792c93be3ddbeff0e4d1dfca648

 public/index.html

@@ -367,9 +367,9 @@
      cursor: pointer;
    }

    /* .flex-box{
    .flex-box{
      display: flex;
    } */
    }
    .el-button--primary {
      color: #FFFFFF;
      background-color: #3D68E1 !important;