Get rid of bar at the bottom of the web

Hi

Ive tried MANY ways, but I still cant get it done.

The white bar only appears after I publish it. It never appears in the Designer.

Does anyone know what to do with this?

Here is my site : https://finalratings.com/best-motherboard-for-i9-10900k/

I dont know how to share read only link.please misuse my Link.