element 分页组件中如何实现只有上一页和下一页,以及pre-text和next-text属性使用

.el-pagination.is-background .btn-next, 
.el-pagination.is-background .btn-prev{
      background-color: #E3E8EE;
      color: #000;
      width: 86px;
      height: 33px;
 }
 .el-pagination.is-background .btn-next:disabled, 
 .el-pagination.is-background .btn-prev:disabled, 
 .el-pagination.is-background .el-pager li.disabled {
      color: #C0C4CC;
 }