overlay menu

Hi guys, I'm totally new here and started using bootstrap studio quite recently. Would someone guide me to make a nav menu similar to the one in this website: www.riccardo.im ? I can imagine he used two different divs to create the splitted screen, but I'm unable to create the menu style that overlays.

Thank you very much


The Nav is position fixed top, right, bottom 0 and left 30%. Z index is 10 in relation to the main layout. When the hamburger menu is not:active state the "visibility "of the Nav is hidden until a click event on the hamburger which changes to active and the Nav is then changed to "visibility" visible along with opacity 1.

Thats about it....other than that, I wish I had a drop of those mad code skills....very impressive.

Thank you a lot! I'll try your suggestions asap!