How to centralize a block?

Question

css

https://codepen.io/loh-lohnesskij/pen/KKzYoZo

The blocks are made with bootstrap and lie on the left. The class "justify-content-center" puts them in the center and the bottom 2 also centers, although they should be aligned to the left edge inside the block. There was an option to insert an invisible block at the end that pushes them, but in the version for tablets and less, they cost two and one at a time. +They can be added via wordpress, so they themselves should be centered.