Button not center aligning on mobile

Hi there!

I was wondering if you had any advice on how I could get the button on main hero image to be centered on mobile.

I included a screenshot so you guys can see it as well. But you will notice on smaller mobile devices the button stays to the far left but the text all center aligns.

I opened up a ticket with the theme developers but figured I would hit you guys up as well.

Cheers!