style💄 管理员管理页面列表添加边框

src/views/admin/sys-user/index.vue

@@ -107,6 +107,7 @@
             <el-table
               v-loading="loading"
               :data="userList"
+              border
               @selection-change="handleSelectionChange"
             >
               <el-table-column type="selection" width="45" align="center" />