Add padding to grouped color background

Hello,

I was wondering if I could get some help with adding a simple bit of padding in a grouped box.

Please check out this article here: https://gadgetgang.com/best-ark-server-hosting-the-complete-guide/

As you can see I talk about different game server providers, within the article I like to add a different background around each host I talk about, please see here: http://prntscr.com/s0jr4p

However, as you can see the box needs some padding as the text goes right to the edges: http://prntscr.com/s0jrwr

Please see this picture to see how I create the box: http://prntscr.com/s0jsk6

Do you know how I can add padding around the box so it looks good on all devices?

Thanks,
Regards,
Dan

I also need some help regarding the bullet points, do you know how I can center them? Please see the following image: http://prntscr.com/s0jxas