Tweak a Wordpress Template

Hi - I will need help over the longer term with Wordpress-related questions. Most of them will have to do with CSS customizations, and Wordpress template tweaks. This project is to kick off this potentially long-term relationship with a single question. I can offer $20 for the resolution of this issue. Please take a look at the test installation at [login to view URL] This is using the Salient Wordpress theme. Please note the placeholder logo graphic on top. It is currently off center to the right. I know it's off-center because the logo is wider than it typically would be. However, making it narrower is not an option. I need it to be centered, and stay centered for all screen sizes (including mobile). I need the solution for this within the hour, and explained in such a way so that I can apply them myself to another Wordpress installation. I'm available to chat now. If I award you this project I can give you full ssh access (using a private key, not root) to both the Linux server and admin access the Wordpress test installation. If you bid on this project, please outline in a few words your approach to solving the issue above. Thank you. Marc.