Of all of the different types of menus you can use on your website, a dropdown menu provides the most benefits. The biggest benefit associated with using a dropdown menu
on your site is being able to organize all of your content into smaller sub-categories that are easy to navigate. By placing all of your content into sub-categories under a larger main category, you will be able to break down your pages in such a way that it is easy for your visitors to find exactly what they are looking for. This will not only ensure your website is not cluttered with a large amount of menu options on your homepage, but your visitors will also have a better experience when visiting your website.
This improved user experience is another benefit associated with using a dropdown menu on your site. If someone is unable to find what they are looking for on your website, they are not very likely to come back to your site in the future. By using a dropdown menu with a large list of categories and sub-categories, you will improve the user experience of your visitors, increasing the likelihood that they will return to your site in the future.
Now our thinking about to get a menu and this licence , css or the js is hosted on your servers? thanks
No you should host the scripts by your own server.