The likely problems are incorrect ordering in HTML files or incorrect usage of the "float" CSS command. Open your HTML file in a text editor. Ensure that the divider for the navigation bar ...

Create an HTML section for your navigation bar. In the HTML file for the page you are working with, locate the section you wish to add the navigation bar to. Use a element to contain it as follows ...

The horizontal navigation bar contains all of your site's top-level links. When users hover over a top-level link, any secondary-level (child) links will appear as a drop-down menu. An arrow appears ...