Hi there,
Thanks for the screen shot, but we can’t inspect that in the browser inspector to see exactly what code is being applied to cause that appearance on your site.
When I look at your site I see the site title centered at the top, and no logo set. It also doesn’t appear as if you’ve added the CSS code that @fstat provided above. Have you decided to not use a logo?
If you do want to use a logo, please add that, along with the suggested CSS, so we can check what’s going on directly on your site. But it’s really difficult to troubleshoot and fix this if we can’t actually see the problem in action on your site.