Need to removing spacing below footer on mobile

Hello,

I need to remove the space below the footer and find your local centre floating bar on mobile.

I have attached the footer.php, stylesheet and a screenshot of what it looks like and what i need it to look like – https://we.tl/t-lW5Pj3s2wj

I also need all the footer items to be centralised as on a bigger mobile eg iphone 7 plus items are more to the left.

Appreciate your help

Many Thanks