How do I add a navigation page in HTML?
The <nav> tag defines a set of navigation links that we will use to navigate between the pages. Add the <div> tag to apply CSS styles to HTML content. HTML elements that have to be styled are assigned class names to be associated with specific CSS styles. Use <h4> tag to add the heading for the navigation bar.
How to include navbar in all pages HTML?
What you could do is to create the nav html file and insert it on all your pages as an iframe. Inside navbar. html, you will need to add an attribute of target="_top" to all you anchor tags, so the full page gets loaded and not only the content inside the iframe, like this: <ul>