Implement about page

tests/components/layout/Accordion.test.tsx

@@ -0,0 +1,22 @@
+import userEvent from "@testing-library/user-event";
+import { render, screen } from "@testing-library/react";
+import { describe, it, expect } from "vitest";
+import Accordion from "../../../app/components/layout/Accordion";
+
+describe("Accordion", () => {
+  it("toggles panel content", async () => {
+    const user = userEvent.setup();
+
+    render(
+      <Accordion title="Question" defaultOpen={false}>
+        Answer copy
+      </Accordion>,
+    );
+
+    expect(screen.queryByText("Answer copy")).not.toBeInTheDocument();
+
+    await user.click(screen.getByRole("button", { name: "Question" }));
+
+    expect(screen.getByText("Answer copy")).toBeInTheDocument();
+  });
+});