Problem with button placement

Hello…

My name is Jacob Erickson and I’m looking for some help. I used the shortcode in the classic editor in wordpress, I’ve been following instructions. My problem is that when I go to preview my website, all of the buttons start out on the left side of the screen, and line up in a row. Is there a way to center the buttons on the page and have them go down, like in a column?

Thanks…

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