Hello Mike,
Sorry for late reply.
The titles under each portfolio item on your website are aligned left, just as in the theme demo at stills.mauer.co. So, this is by design.
If you want to center them, this can be done with the following line of CSS:
.portfolio-project-tile .entry-title {text-align: center;}
You can add this code by going to ‘Appearance’ -> ‘Customize’ -> ‘Additional CSS’ in your Admin Panel. There you can just paste the above code and hit ‘Publish’.
Regards,
Paul