diff --git a/src/portal/src/app/project/member/add-group/add-group.component.html b/src/portal/src/app/project/member/add-group/add-group.component.html
index 0432901e5..cb265b8a4 100644
--- a/src/portal/src/app/project/member/add-group/add-group.component.html
+++ b/src/portal/src/app/project/member/add-group/add-group.component.html
@@ -105,4 +105,4 @@
         <button type="button" class="btn btn-primary" [disabled]="!isValid"  (click)="onSave()">{{'BUTTON.SAVE' | translate}}</button>
     </div>
 
-</clr-modal>
\ No newline at end of file
+</clr-modal>
diff --git a/src/portal/src/app/project/project-detail/project-detail.component.html b/src/portal/src/app/project/project-detail/project-detail.component.html
index 69b5bd842..248973f18 100644
--- a/src/portal/src/app/project/project-detail/project-detail.component.html
+++ b/src/portal/src/app/project/project-detail/project-detail.component.html
@@ -6,7 +6,7 @@
 <clr-tabs id="project-tabs" class="tabs" [class.in-overflow]="isTabLinkInOverFlow()">
     <ng-container *ngFor="let tab of tabLinkNavList;let i=index">
         <ng-container *ngIf="tab.permissions()">
-            <clr-tab >
+            <clr-tab>
                 <button [class.clear-default-active]="isDefaultTab(tab, i)" [clrTabLinkInOverflow]="tab.tabLinkInOverflow" id="{{'project-'+tab.linkName}}" clrTabLink
                     routerLink="{{tab.linkName}}" routerLinkActive="active" type="button">
                     <a class="nav-link">{{tab.showTabName | translate}}</a></button>
diff --git a/src/portal/src/app/project/project-detail/project-detail.component.scss b/src/portal/src/app/project/project-detail/project-detail.component.scss
index 8e771e1d4..0e7e8ab29 100644
--- a/src/portal/src/app/project/project-detail/project-detail.component.scss
+++ b/src/portal/src/app/project/project-detail/project-detail.component.scss
@@ -42,16 +42,3 @@ button {
     padding: 0;
   }
 }
-
-.in-overflow {
-  ::ng-deep {
-    .tabs-overflow {
-      > .nav-item {
-        > button {
-          box-shadow: 0 -3px 0 #0077b8 inset;
-          color: 0077b8;
-        }
-      }
-    }
-  }
-}
diff --git a/src/portal/src/app/project/project-detail/project-detail.component.ts b/src/portal/src/app/project/project-detail/project-detail.component.ts
index 2422f8041..e6ea1cd1c 100644
--- a/src/portal/src/app/project/project-detail/project-detail.component.ts
+++ b/src/portal/src/app/project/project-detail/project-detail.component.ts
@@ -11,21 +11,24 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-import { Component, OnInit } from '@angular/core';
+import { Component, OnInit, HostListener, AfterViewInit, OnDestroy, ChangeDetectorRef } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
 import { Project } from '../project';
 import { SessionService } from '../../shared/session.service';
 import { AppConfigService } from "../../app-config.service";
-import { forkJoin } from "rxjs";
-import { ProjectService, UserPermissionService, USERSTATICPERMISSION } from "../../../lib/services";
+import { forkJoin, Subject, Subscription } from "rxjs";
+import { UserPermissionService, USERSTATICPERMISSION } from "../../../lib/services";
 import { ErrorHandler } from "../../../lib/utils/error-handler";
+import { debounceTime } from 'rxjs/operators';
+import { DOWN, SHOW_ELLIPSIS_WIDTH, UP } from './project-detail.const';
+
+
 @Component({
   selector: 'project-detail',
   templateUrl: 'project-detail.component.html',
   styleUrls: ['project-detail.component.scss']
 })
-export class ProjectDetailComponent implements OnInit {
-
+export class ProjectDetailComponent implements OnInit, AfterViewInit, OnDestroy {
   hasSignedIn: boolean;
   currentProject: Project;
 
@@ -89,29 +92,32 @@ export class ProjectDetailComponent implements OnInit {
     },
     {
       linkName: "tag-strategy",
-      tabLinkInOverflow: true,
+      tabLinkInOverflow: false,
       showTabName: "PROJECT_DETAIL.TAG_STRATEGY",
       permissions: () => this.hasTagRetentionPermission
     },
     {
       linkName: "robot-account",
-      tabLinkInOverflow: true,
+      tabLinkInOverflow: false,
       showTabName: "PROJECT_DETAIL.ROBOT_ACCOUNTS",
       permissions: () => this.hasRobotListPermission
     },
     {
       linkName: "webhook",
-      tabLinkInOverflow: true,
+      tabLinkInOverflow: false,
       showTabName: "PROJECT_DETAIL.WEBHOOKS",
       permissions: () => this.hasWebhookListPermission
     },
     {
       linkName: "logs",
-      tabLinkInOverflow: true,
+      tabLinkInOverflow: false,
       showTabName: "PROJECT_DETAIL.LOGS",
       permissions: () => this.hasLogListPermission
     }
   ];
+  previousWindowWidth: number;
+  private _subject = new Subject<string>();
+  private _subscription: Subscription;
   constructor(
     private route: ActivatedRoute,
     private router: Router,
@@ -119,8 +125,7 @@ export class ProjectDetailComponent implements OnInit {
     private appConfigService: AppConfigService,
     private userPermissionService: UserPermissionService,
     private errorHandler: ErrorHandler,
-    private projectService: ProjectService) {
-
+    private cdf: ChangeDetectorRef) {
     this.hasSignedIn = this.sessionService.getCurrentUser() !== null;
     this.route.data.subscribe(data => {
       this.currentProject = <Project>data['projectResolver'];
@@ -131,6 +136,32 @@ export class ProjectDetailComponent implements OnInit {
   ngOnInit() {
     this.projectId = this.route.snapshot.params['id'];
     this.getPermissionsList(this.projectId);
+    if (!this._subscription) {
+      this._subscription = this._subject.pipe(
+          debounceTime(100)
+      ).subscribe(
+          type => {
+            if (type === DOWN) {
+              this.resetTabsForDownSize();
+            } else {
+              this.resetTabsForUpSize();
+            }
+          }
+      );
+    }
+  }
+
+  ngAfterViewInit() {
+    this.previousWindowWidth = window.innerWidth;
+    setTimeout(() => {
+      this.resetTabsForDownSize();
+    }, 0);
+  }
+  ngOnDestroy() {
+    if (this._subscription) {
+      this._subscription.unsubscribe();
+      this._subscription = null;
+    }
   }
   getPermissionsList(projectId: number): void {
     let permissionsList = [];
@@ -153,17 +184,17 @@ export class ProjectDetailComponent implements OnInit {
     permissionsList.push(this.userPermissionService.getPermission(projectId,
       USERSTATICPERMISSION.LABEL.KEY, USERSTATICPERMISSION.LABEL.VALUE.CREATE));
     permissionsList.push(this.userPermissionService.getPermission(projectId,
-        USERSTATICPERMISSION.TAG_RETENTION.KEY, USERSTATICPERMISSION.TAG_RETENTION.VALUE.READ));
+      USERSTATICPERMISSION.TAG_RETENTION.KEY, USERSTATICPERMISSION.TAG_RETENTION.VALUE.READ));
     permissionsList.push(this.userPermissionService.getPermission(projectId,
       USERSTATICPERMISSION.WEBHOOK.KEY, USERSTATICPERMISSION.WEBHOOK.VALUE.LIST));
     permissionsList.push(this.userPermissionService.getPermission(projectId,
-        USERSTATICPERMISSION.SCANNER.KEY, USERSTATICPERMISSION.SCANNER.VALUE.READ));
+      USERSTATICPERMISSION.SCANNER.KEY, USERSTATICPERMISSION.SCANNER.VALUE.READ));
 
     forkJoin(...permissionsList).subscribe(Rules => {
       [this.hasProjectReadPermission, this.hasLogListPermission, this.hasConfigurationListPermission, this.hasMemberListPermission
         , this.hasLabelListPermission, this.hasRepositoryListPermission, this.hasHelmChartsListPermission, this.hasRobotListPermission
         , this.hasLabelCreatePermission, this.hasTagRetentionPermission, this.hasWebhookListPermission,
-        this.hasScannerReadPermission] = Rules;
+      this.hasScannerReadPermission] = Rules;
     }, error => this.errorHandler.error(error));
   }
 
@@ -188,10 +219,46 @@ export class ProjectDetailComponent implements OnInit {
   isDefaultTab(tab, index) {
     return this.route.snapshot.children[0].routeConfig.path !== tab.linkName && index === 0;
   }
+
   isTabLinkInOverFlow() {
     return this.tabLinkNavList.some(tab => {
       return tab.tabLinkInOverflow && this.route.snapshot.children[0].routeConfig.path === tab.linkName;
     });
   }
 
+  @HostListener('window:resize', ['$event'])
+  onResize(event) {
+    if (this.previousWindowWidth) {
+       // down size
+      if (this.previousWindowWidth > event.target.innerWidth) {
+          this._subject.next(DOWN);
+      } else { // up size
+          this._subject.next(UP);
+      }
+    }
+    this.previousWindowWidth = event.target.innerWidth;
+  }
+
+  resetTabsForDownSize(): void {
+    this.tabLinkNavList.filter(item => !item.tabLinkInOverflow).forEach((item, index) => {
+      const tabEle: HTMLElement = document.getElementById('project-' + item.linkName);
+      // strengthen code
+      if (tabEle && tabEle.getBoundingClientRect) {
+        const right: number = window.innerWidth - document.getElementById('project-' + item.linkName).getBoundingClientRect().right;
+        if (right < SHOW_ELLIPSIS_WIDTH) {
+          this.tabLinkNavList[index].tabLinkInOverflow = true;
+        }
+      }
+    });
+  }
+  resetTabsForUpSize() {
+    // 1.Set tabLinkInOverflow to false for all tabs(show all tabs)
+    for ( let i = 0; i < this.tabLinkNavList.length; i++) {
+      this.tabLinkNavList[i].tabLinkInOverflow = false;
+    }
+    // 2.Manually  detect changes to rerender dom
+    this.cdf.detectChanges();
+    // 3. Hide overflowed tabs
+    this.resetTabsForDownSize();
+  }
 }
diff --git a/src/portal/src/app/project/project-detail/project-detail.const.ts b/src/portal/src/app/project/project-detail/project-detail.const.ts
new file mode 100644
index 000000000..9d195ecb5
--- /dev/null
+++ b/src/portal/src/app/project/project-detail/project-detail.const.ts
@@ -0,0 +1,3 @@
+export const SHOW_ELLIPSIS_WIDTH = 80;
+export const DOWN: string = "down";
+export const UP: string = "up";
diff --git a/src/portal/src/css/common.scss b/src/portal/src/css/common.scss
new file mode 100644
index 000000000..06c40fdf5
--- /dev/null
+++ b/src/portal/src/css/common.scss
@@ -0,0 +1,11 @@
+// styles for dark and light theme should be defined here.
+.in-overflow {
+    .tabs-overflow {
+      > .nav-item {
+        > button {
+          box-shadow: 0 -3px 0 $dark-active-tab-color inset;
+          color: 0077b8;
+        }
+      }
+    }
+}
\ No newline at end of file
diff --git a/src/portal/src/css/dark-theme.scss b/src/portal/src/css/dark-theme.scss
index 53999bf2e..2ecf4eb2c 100644
--- a/src/portal/src/css/dark-theme.scss
+++ b/src/portal/src/css/dark-theme.scss
@@ -1,7 +1,9 @@
+// Variables for dark theme should be defined here.
 @import "../../node_modules/@clr/ui/clr-ui-dark.min.css";
 $dark-background-color: rgb(27, 42, 50) !important;
 $dark-font-color1: #acbac3 !important;
 $dark-font-color-title1: #eaedf0 !important;
+$dark-active-tab-color: #4aaed9;
 
 .label-form {
   background-color: #212129 !important;
@@ -110,4 +112,6 @@ clr-dg-action-overflow {
       color: #1b2a32;
     }
   } 
-}
\ No newline at end of file
+}
+
+@import "./common.scss";
\ No newline at end of file
diff --git a/src/portal/src/css/light-theme.scss b/src/portal/src/css/light-theme.scss
index b09e7465a..8d93ad912 100644
--- a/src/portal/src/css/light-theme.scss
+++ b/src/portal/src/css/light-theme.scss
@@ -1 +1,5 @@
-@import "../../node_modules/@clr/ui/clr-ui.min.css";
\ No newline at end of file
+// Variables for dark theme should be defined here.
+@import "../../node_modules/@clr/ui/clr-ui.min.css";
+
+$dark-active-tab-color: #0077b8;
+@import "./common.scss";
\ No newline at end of file