diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/chat.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/chat.component.html
index 9e0e6e7d..b5648d67 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/chat.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/chat.component.html
@@ -65,7 +65,7 @@
   </perfect-scrollbar>
   <!-- <cdk-virtual-scroll-viewport
     #cvsvChatList
-    itemSize="80"
+    itemSize="60"
     perfectScrollbar
     fxFlexFill
   >
@@ -96,7 +96,7 @@
     </ucap-room-list-item>
   </perfect-scrollbar>
   <!-- <cdk-virtual-scroll-viewport
-    itemSize="20"
+    itemSize="60"
     class="app-layout-chat-left-sidenav-chat-list-viewport"
   >
     <ucap-room-list-item
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
index 0cacd741..b00f5106 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
@@ -63,7 +63,7 @@
     </div>
     <div *ngIf="!isShowSearch" class="search-list">
       <cdk-virtual-scroll-viewport
-        itemSize="64"
+        itemSize="60"
         #cvsvDeptUser
         perfectScrollbar
         fxFlexFill
@@ -89,7 +89,7 @@
     <div *ngIf="isShowSearch" class="search-result">
       <cdk-virtual-scroll-viewport
         #cvsvDeptSearchUser
-        itemSize="64"
+        itemSize="60"
         perfectScrollbar
         fxFlexFill
       >
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html
index dd4da3f8..a0d81d38 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html
@@ -22,7 +22,7 @@
   <mat-card-content>
     <div class="item-list">
       <cdk-virtual-scroll-viewport
-        itemSize="64"
+        itemSize="60"
         #cvsvDeptUser
         perfectScrollbar
         fxFlexFill
diff --git a/projects/ucap-webmessenger-ui-group/src/lib/components/expansion-panel.component.html b/projects/ucap-webmessenger-ui-group/src/lib/components/expansion-panel.component.html
index 3146a78b..dee6f273 100644
--- a/projects/ucap-webmessenger-ui-group/src/lib/components/expansion-panel.component.html
+++ b/projects/ucap-webmessenger-ui-group/src/lib/components/expansion-panel.component.html
@@ -1,6 +1,6 @@
 <cdk-virtual-scroll-viewport
   #cvsvGroup
-  itemSize="64"
+  itemSize="60"
   perfectScrollbar
   fxFlexFill
 >