I have a picture as a banner across the top of my web page, but I get a repeat of part of the picture. I thought there was a repeat setting, but I can't find it. Is there a repeat setting or is it something else?
When I have investigated the element code with the container selected there is no html code but the picture is mentioned in the CSS or the container.

The repeat or not repeat setting is where you add background images, but in the version of your project that I have seen, you had set the header image to not repeat.
BTW, that image has a white 'padding' on the left side that needs to be chopped off. Otherwise, it looks like the image will never centre.

I have now fixed as much of your index page as possible, so it should be on its way back to you. I fixed that image too.