Problem with creating a new page. Help is appreciated!!

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Hey, so I’m mainly a Shopify store builder but I thought I’d get going with WordPress to broaden my skills a bit. Lots of it is really easy to pick up but I’m just having a problem when I create a new page. There seems to be an ugly block that I didn’t add to the very top of my new page and I can’t figure out how to get rid of it.

[This is it in the editor \(I’ll post the preview in the comments\)])