Edit Mode views differs from Published/Preview view

Hey guys,

I’m attempting to change my portfolio site over to Webflow. I haven’t really gotten far. Before I continued to build my site, I decided to hit publish in order to see how it would look like. I’m glad I did because I found this:

This is how my site looks in edit mode

Here is my site Read-Only: Webflow - Alexis's Amazing Site

This is how my site looks published/in preview mode:

I have no clue how to fix this. Is there anyway to fix my header? Is there a way to have my edit mode be an accurate reflection of what my site will look published?