What are some CSS tricks I can use to make this better?

Question

I want to add a background color with outline to each core value section. i also want to edit the border, margin, padding, im not sure what would be bewt, but I want to keep the content in the middle of the page.
https://code.sololearn.com/WIB6Iy1CuiEf/?ref=app

Answer 1

you can change background colorusing=body{background-color:green;
and change the color using =color:gold;}
you can also include border if you wish.see some css codes in code play