A clean navigation system should work on desktop and mobile without duplicating logic. In this snippet, we build a responsive header with a slide-in mobile drawer and proper focus management.

What you will implement

• Sticky top navigation bar with brand, links, and theme toggle
• Mobile drawer with backdrop and close action
• Accessible keyboard interactions for menu controls

Key implementation notes

Use a single menu source so desktop and mobile links stay in sync. Keep drawer state in the header and pass it to hamburger and mobile menu components. Add body scroll lock while the drawer is open to prevent background movement.

For polished UX, animate opacity on the backdrop and transform on the drawer. Keep z-index layers explicit so the drawer always appears above hero banners and page content.

Why this pattern matters

This pattern gives users predictable navigation behavior across devices and avoids common layout bugs caused by duplicate menus.