As you know, the dropdown menu is important for any kind of website to show information about the website more and more, which users or visitors need. Every website has a navbar for providing a graphical user interface.
As you can see in the image, this is a Dropdown Menu Bar which is based in only HTML and CSS. There are menu items, one background image, and some dummy text on the webpage. But when you will hover over a specific menu then the submenu will appear. Basically, at first, the submenu is hidden but when you hover over menu item a specific menu's submenu will appear. This is only a frontend program or design without any backend integration.
You can also download the source code files through the given link. In the source files, there you also get a background image of this program. Click here to download source code files.