How do I add a submenu to a drop down list?
Create A Subnav
Use any element to open the subnav/dropdown menu, e.g. a <button>, <a> or <p> element. Use a container element (like <div>) to create the subnav menu and add the subnav links inside it. Wrap a <div> element around the button and the <div> to position the subnav menu correctly with CSS.