Multi-category menu for Zerif Lite theme?

Hi,

My company’s website is based on WordPress and Zerif Lite (and hosted on one of my root servers running CentOS 7).

I’m quite satisfied with the look & feel provided by the Zerif Lite theme. There’s one thing I’d like to change though.

The Hestia theme has a great multi-category menu. Take a peek at the Hestia demo page and hover over the “Features” menu entry, for example:

https://themeisle.com/demo/?theme=Hestia

I’d like to use this menu (or a similar one) in the Zerif Lite theme.

Any suggestions?

The page I need help with: [log in to see the link]