When creating a website or an app, it's important to consider how it will appear on mobile devices. A key part of this is using a responsive header, which adjusts to fit different screen sizes, ensuring that the header looks good and functions well whether on a desktop, tablet, or smartphone.

One effective feature for mobile-friendly headers is the hamburger menu. This is the icon with three horizontal lines that you often see in the corner of mobile screens. It's a popular choice because it's widely recognized by users as a menu button. When tapped, it reveals the navigation options.

The hamburger menu is especially handy on mobile devices because it takes up minimal screen space and is easy to reach with a thumb, making it convenient for one-handed use.