diff --git a/main/manager-web/src/components/CustomDialog.vue b/main/manager-web/src/components/CustomDialog.vue
index 14829429..92f55dae 100644
--- a/main/manager-web/src/components/CustomDialog.vue
+++ b/main/manager-web/src/components/CustomDialog.vue
@@ -123,6 +123,7 @@ export default {
     border-radius: 10px;
     overflow: hidden;
     box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+    margin-top: 15vh !important;
   }
 
   ::v-deep .el-dialog__header {
diff --git a/main/manager-web/src/components/MacAddressMask.vue b/main/manager-web/src/components/MacAddressMask.vue
index d779785e..ed7d2fd7 100644
--- a/main/manager-web/src/components/MacAddressMask.vue
+++ b/main/manager-web/src/components/MacAddressMask.vue
@@ -13,7 +13,7 @@ export default {
   },
   computed: {
     isValid() {
-      return /^(?:[0-9A-F]{2}[:-]){5}[0-9A-F]{2}$/i.test(this.macAddress);
+      return /^(?:[0-9A-Z]{2}[:-]){5}[0-9A-Z]{2}$/i.test(this.macAddress);
     },
     segments() {
       return this.macAddress.split(':');
diff --git a/main/manager-web/src/views/KnowledgeBaseManagement.vue b/main/manager-web/src/views/KnowledgeBaseManagement.vue
index e15650a0..9ab2b42f 100644
--- a/main/manager-web/src/views/KnowledgeBaseManagement.vue
+++ b/main/manager-web/src/views/KnowledgeBaseManagement.vue
@@ -107,7 +107,7 @@
     </div>
 
     <!-- Knowledge Base Dialog -->
-    <knowledge-base-dialog
+    <KnowledgeBaseDialog
       ref="knowledgeBaseDialog"
       :title="dialogTitle"
       :visible.sync="dialogVisible"