Keep mobile site header centred?

Hi again, It's been a while. I'm still working on the layout of my site (http://goo.gl/49Mbeo). When I adjust the mobile screen with, the header logo, site title, site description, and social media icons don't stay centred. Is there a way to keep them centred at any mobile screen size? Here's a screenshot: http://snag.gy/hblEi.jpg Thanks again for all your help!