app-transfer.less

.transfer-select{
  .ivu-select-dropdown {
      padding: 0px;
      .transfer-select__hidden {
          display: none;
      }
  }
}
.transfer-select__transfer{
    max-height: 200px;
    min-width: 100%;
    display: flex;
    justify-content: space-between;
    .el-transfer-panel{
        min-width: 25%;
        .el-transfer-panel__body{
          max-height: 160px;
        }
        .el-checkbox-group{
            max-height: 160px;
        }
        .el-checkbox+.el-checkbox {
            margin-left: 0px; 
        }   
    }
    .el-transfer__buttons{
        align-self: center;
    }
}