mystery h1 header

The characters "[A]" (without quotes) appear as an h1 header tag across all pages on my site. When I inspect the code I can't find it. What is this for? I know it has something to do with the logo placed in the upper left corner of my site template, but I don't know why it's there and whether or not it can or should be removed.

The image you posted is a broken link. If you could provide a URL to your website that might help us as well.