diff --git a/cypress.config.ts b/cypress.config.ts
index 4f69bc3..8b53b74 100644
--- a/cypress.config.ts
+++ b/cypress.config.ts
@@ -5,6 +5,11 @@ export default defineConfig({
     setupNodeEvents(on, config) {
       // implement node event listeners here
     },
+    env:{
+      home_url:"/",
+      exercises_url:"/danh-sach-bai-tap",
+      do_exercise_url:"/lam-bai",
+    },
     projectId: 'kjhvhq',
     baseUrl: "http://localhost:3000/testing-cypress"
   },
diff --git a/cypress/e2e/navbar/header.cy.ts b/cypress/e2e/navbar/header.cy.ts
new file mode 100644
index 0000000..ef055bd
--- /dev/null
+++ b/cypress/e2e/navbar/header.cy.ts
@@ -0,0 +1,83 @@
+import { Header } from "../../pages/header";
+
+describe("Test navigation", () => {
+  beforeEach(() => {
+    cy.login();
+    cy.viewport('macbook-15')
+    
+  })
+
+  it("Have Logo to go home", () => {
+    const header = new Header();
+    header.element.logoBtn().click();
+    cy.location().should((location) => {
+      expect(location.hash).to.be.empty
+      expect(location.href).to.eq('http://localhost:3000/testing-cypress/')
+      expect(location.host).to.eq('localhost:3000')
+      expect(location.hostname).to.eq('localhost')
+      expect(location.origin).to.eq('http://localhost:3000')
+      expect(location.pathname).to.eq('/testing-cypress/')
+      expect(location.port).to.eq('3000')
+      expect(location.protocol).to.eq('http:')
+      expect(location.search).to.be.empty
+    })
+  });
+
+  it("Test Search with keyword 'hoa'", () => {
+    const header = new Header();
+    header.enterSearchInput("hoa");
+    header.clickSearchButton();
+
+    // have pagination
+    cy.get("#componentContainer > li").should('have.length', 7);
+
+    // total 74 page
+    cy.get("#componentContainer > li").eq(5).should('have.text', '74');
+  })
+
+  it("Load page exercise", () => {
+    cy.visit(Cypress.env('exercises_url')+'/bai-tap-tieng-anh');
+    cy.wait(2000);
+    cy.get(".min-h-screen").first().within(()=>{
+      cy.get("a").should("have.length", 10);
+    })
+
+    cy.get("#componentContainer > li").eq(5).should('have.text', '10');
+  });
+
+  it("Do exercise", () => {
+    cy.visit(Cypress.env('exercises_url')+'/bai-tap-tieng-anh');
+    cy.wait(2000);
+
+    cy.get(".min-h-screen").first().within(()=>{
+      cy.get("a").eq(2).click();
+    })
+
+    cy.wait(2000);
+    // each question have 4 options
+    cy.get("h1 > p").each(($el, index) => {
+      cy.wrap($el).parent().parent().find("p > label").should("have.length", 3);
+      // select random answer
+      cy.wrap($el).parent().parent().find("p > input").eq(index%3).check();
+    });
+
+    cy.get("button[type='button']").click();
+    cy.wait(2000);
+
+    // check result
+    cy.get("span").should("have.text", "11/20")
+    cy.get("h1").last().should("have.text", "5.5")
+
+    // have 3 buttons control
+    cy.get("button > i").should("have.length", 3);
+    cy.get("button > i").first().parent().contains("Thử làm lại");
+    cy.get("button > i").eq(1).parent().contains("Xem đáp án chi tiết");
+    cy.get("button > i").last().parent().contains("Làm các đề khác");
+
+    // have quote
+    cy.wait(1000);
+    cy.get("i > b").invoke('text').then((text) => {
+      expect(text.trim().length).to.greaterThan(0);
+    });
+  })
+})
\ No newline at end of file
diff --git a/cypress/pages/header.ts b/cypress/pages/header.ts
new file mode 100644
index 0000000..024a43c
--- /dev/null
+++ b/cypress/pages/header.ts
@@ -0,0 +1,17 @@
+export class Header {
+  element = {
+    logoBtn: () => cy.contains("a", "Baitaptracnghiem"),
+    searchOpen:()=> cy.get("button>span").contains("span", "tìm kiếm"),
+    searchInput:()=> cy.get("#simple-search"),
+    searchBtn: ()=>  cy.get("button[type='submit']"),
+  }
+
+  enterSearchInput(text: string){
+    this.element.searchOpen().click();
+    this.element.searchInput().type(text);
+  }
+
+  clickSearchButton(){
+      this.element.searchBtn().click();
+  }
+}
diff --git a/cypress/support/commands.ts b/cypress/support/commands.ts
index 698b01a..d60c6fa 100644
--- a/cypress/support/commands.ts
+++ b/cypress/support/commands.ts
@@ -34,4 +34,10 @@
 //       visit(originalFn: CommandOriginalFn, url: string, options: Partial<VisitOptions>): Chainable<Element>
 //     }
 //   }
-// }
\ No newline at end of file
+// }
+
+Cypress.Commands.add('login', () => {
+  cy.visit(Cypress.env('home_url'))
+  cy.wait(2000)
+})
+
diff --git a/cypress/support/e2e.ts b/cypress/support/e2e.ts
index f80f74f..bebc1ff 100644
--- a/cypress/support/e2e.ts
+++ b/cypress/support/e2e.ts
@@ -1,18 +1,3 @@
-// ***********************************************************
-// This example support/e2e.ts is processed and
-// loaded automatically before your test files.
-//
-// This is a great place to put global configuration and
-// behavior that modifies Cypress.
-//
-// You can change the location of this file or turn off
-// automatically serving support files with the
-// 'supportFile' configuration option.
-//
-// You can read more here:
-// https://on.cypress.io/configuration
-// ***********************************************************
-
 // Import commands.js using ES2015 syntax:
 import './commands'
 
diff --git a/cypress/support/index.d.ts b/cypress/support/index.d.ts
new file mode 100644
index 0000000..0845575
--- /dev/null
+++ b/cypress/support/index.d.ts
@@ -0,0 +1,5 @@
+declare namespace Cypress {
+  interface Chainable {
+    login(): Chainable<void>
+  }
+}
\ No newline at end of file