why is a scroll bar appearing on my website?

Hello all! It’s been a while since I posted anything ??

I’m making a website for someone and I can’t figure out something.

This only happens in Google Chrome. Here is the page https://www.graphictask.com/?page_id=3

After you click “add to cart” a vertical and horizontal scrollbar will appear.

I hope someone can help me out with this. I have no idea how to fix it.