Can't figure out why background color is being applied in 2 different ways

I'm working on a simple portfolio website and am having tremendous trouble figuring out why the bottom social/contact section of the site has the background colors going all the way to the edge and not following the padding like all the other sections.

Any advice would be greatly appreciated!

Thanks and here's the link \- [https://funkymustache.github.io/](https://funkymustache.github.io/)