saguaros Thank you very much! I apologize for my own inattention.
Now I found that the screensaver "running cubes" which is displayed while the template page is loading - for some reason it was strongly transferred to the bottom of the page. It used to be visible at the top, and now they are below. Should I open a separate topic for this question or will you answer here?
Try it yourself, when you load the page you can see the black background of the template, and this screensaver is much lower than it should be. Unfortunately, I can't use the debugger in the browser because the page still loads to the end and I can't find which file is responsible for the output of this screen saver.