How to make many containers fit perfectly inside another container in wordpress?

[master123]

I am quite new to wordpress and I am still learning about different functionalities with Elementor. As you can see in the picture of my website below, there is white around the four colored boxes. How do I make the containers fit perfectly inside the bigger container?

Also another question not necessarily related to Elementor. But how do I make circles as in the picture below:

I mean the circles that has 3246kr, 4146kr, 6546kr.

Thanks in advance!