Okay, I'm impatient and new to GSAP. Oh, and I hate CSS. I found an example of a vertical banner that works wonderfully. Rather than copy it completely I tried to put my own together and backwards engineer it horizontally. I slapped this design together just to get going with the code. It isn't special. What I am trying to achieve is probably obvious. When you rollover the red half... a full red banner should appear. When you rollover the blue side, the full blue banner appears. It somewhat works but is not very smooth and there are some quirks I have not been able to figure out. You will see what I mean... but if you don't... Rollover the red side and sometimes you see the full blue banner behind it for a split second. Same for the red banner. I've tried almost everything I can think of to hide and reveal things in the right order but something is off. I hate CSS but use it all the time with success (it just takes me longer than others) and I think my problem may be related. Help a newbie to GSAP and CodePen out if you can/would please. How can I fix this to be smooth and work properly. If we fix this, I will design a nicer banner ad to replace it and use the concepts for another CodePen example. Thanks in advance...