How it looks when title isn’t wrapping(all good)

okay, im doing one of my first pages with html and css, and look, you know that operagx and the other browser have the normal size screen and the fullscreen when you press f11, the problem here is that my page in the normal size of the browser is in a position, and when i fullscreen obviously it expands, but when it expands, an image that i have on the page is hiding behinf another img, because it is going a little bit to the left, is there some way to fix that? like, to fix the image in one point and it doesnt change?