Header Question

I am using Primo theme found in WordPress. I wanted a custom header, so I could use my own logo, which I have. My question is the little blue image on the header that I presume is the clickable home feature, where someone can click on the header in that area from any page, and be redirected back to the home page. Which it does. However, I don’t want the little blue image to show….I don’t know what it’s called in the CSS, so I don’t know what I’m looking for to take it out. I’m OK if the header isn’t clickable w/o the image. I just want it off. Any ideas? Thanks.

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