Centering title-area and widget-area

Here is my layout: https://bloggingtutorials.youngmomsdeals.com/

I’m currently attempting my first custom theme and I’ve learned so much so quickly! I am having trouble centering the title-area and the widget-area in the header to align with the center of the content-sidebar wrap. I am trying to do everything relative instead of absolute to be more responsive, but nothing that I do seems to move the header to the center.

Does anyone have any advice?