I am just about to start on a one page website and will be using beaver builder. I would like the header & nav to stick at the top and the buttons light up when the corresponding row of the page is on screen, also I would like the buttons jump to the correct row on the page when they are selected… Can beaver builder do this?
Yes, BB can definitely do the page layout, but for the sticky / fixed header, active section menu item highlight and scrolling to the section, you will need to do that outside of BB.
Here is a plugin that will get you the scroll to section (ID):
