When I reveal items on interaction extra white section shows up on bottom

Hi! I am trying to reveal some items on button click, they all show up but the issue is an extra white section seems to show up on the bottom when elements are revealed. I have tried removing all paddings and margins but does not seem to help. Note that the issue only appeared when I added the header and paragraph on the leftmost div block (column-card). Could someone please help me understand why this is happening? Thank you!

Before element reveal (click play):

After element reveal:

Here is my public share link: https://preview.webflow.com/preview/recogs-dope-hero-section?utm_medium=preview_link&utm_source=designer&utm_content=recogs-dope-hero-section&preview=c5a96ca8ae12393aa672cf14b67d3d08&mode=preview