Scroll bar Mobile shopping cart

Hello, i have a problem only in the mobile mode.
When a customer adds many products (more than 8-9 moreless) you can’t visualize the total amount of the order and either finish the order. I would love to have a scroll bar or solve this issue.
However i couln’t find any solution that fixs this problem.

Thanks and hope you can help me

here i post the error: https://ibb.co/SyQjhVn
here i post when i have less product and i can see the part where i can finish the order: https://ibb.co/5Bdw7HX

The page I need help with: [log in to see the link]