A clean, responsive navigation bar can be created using only HTML and CSS, with no JavaScript required.The navbar structure includes a container, logo/brand, navigation links, and a checkbox toggle for mobile devices.CSS is used for styling and layout, with Flexbox used for the navbar structure and the checkbox toggle used to show/hide the menu for mobile devices.By following these steps, a fully responsive navigation bar can be created that is mobile-friendly and ready to use in any project.