Thanks for your question about the blue strip on your page. It looks like there is a custom logo on your page. Did the strip appear before or after adding the logo? If you can provide a sequence of what steps you took before noticing the blue strip, it will help us replicate the issue and possibly find a solution.
On the customize page the blue strip is where I can enter a site title. I would like to leave it blank. I only want the logo on the page. Since the company name is on the logo I don’t need a title.