Everything seemed to be working until I tried to switch from vertical cards to horizontal cards. I wasn’t sure how to alter the existing component so I deleted it and made a new one. Got it looking nice on the screen, but every time I previewed, the cards would be halfway down the screen/off screen, and I couldn’t scroll down to see them. So I tried to rebuild the cards vertically again, but now ALL the components are off when I preview. The bottom navigation bar is way above where it should be and its white background box is stretched, and the cards are also either too high or too low. No idea what’s going on.
Added two screenshots to show what’s messing up.

