Demo : http://s3.css.co.in/demo/mega-menu.html

Code : https://gist.github.com/anjanesh/876b781b69fff9598fd73ffeda4b9318

Sorry for no explanation here.

#top-menu-1 > div > a + div:hover has to be displayed as block too.

For people who know CSS, I think most people just want to copy-paste code and edit for customization. And people who don’t know CSS will just edit the content.