In my website builder and when I publish my website, some of my website pages have grey at the bottom of them.
In Preview, I’ve tried - Right click on the banner, then in the inspector area, double click the banner’s code, delete the code, and hit enter
But this doesn’t work. Please help!!
This is caused by the background not fitting all the page 
Thanks so much for all your helo @ckhawand
How do I get it to fit the whole page? Does that mean every page has to scroll to fit the whole page?
Also i created my page by importing another website but it is still showing their company name in the tab. Do you know how I change this?
I didn’t understand what you said 
I’m not sure how to make the whole page fit.
Is there a way to make my pages smaller? The pages with the grey are quite long and I have to scroll down to see the whole page and they still have grey on the bottom. I’ve tried un-ticking don’t scroll background but all my pages scroll.
My first page doesn’t have as much information and there is no grey on the bottom.
With the screen shot of the tab, it should say 'Blog I My company"
but it says “Blog I Other company”
How do I change this?
You’ll have to apply some CSS of your own which I can’t really help with
in head section fo each page you can find title tag you can write that you want in title tag