Can’t center copyright and socials in mobile

Hello,

I have a few problems, one is centering my copyright and socials on mobile and two is having my copyright and socials unaligned despite being in the same row (in mobile). I’m not exactly good at coding, only a bit of experience but I have tried using Additional CSS, however, the ones I have seen and used in other posts don’t work for me so I’m not sure how to fix this.

I am not using any footer/header plugins, just editing it from the built-in Customize with the Astra theme. Do note that I only want it to be centered on mobile as I am quite satisfied with the left-align look on both Desktop and Tablet. Hopefully, this is also the right forum for this question as I am new here. Thank you!

The page I need help with: [log in to see the link]