Hi, hoping you can help. Newbie here. Apologies for the stupid questions. I'm making a header in the header builder, I have four bars, one at the very top (for logo etc), one below as a nav bar, then one video bar, and finally a hidden bar containing a button. The two top bars remain in place when scrolling up, but the video bar scrolls up 'in front' of the two top bars instead of behind them? Any help you can give here would be greatly appreciated. Cheers.