I’ve made it to the end, but something still doesn’t quite work. I made a child theme and did all my edits there. I added all the HTML necessary for the spinner at header.php after <head> tag. All the CSS at style.css. But now there’s the part to make the spinner spin for 3 seconds and then initiate the loading exit animation. I tried to add that Jquery line (pasted at the end of doc.) to GP hooks section. Tried to hook the line in wp_head, wp_footer, before_footer, but no success. The spinner spins and never initiates the exit animation… So then I tried to add the “loaded” class manually by applying it to header.php “body(‘loaded’)” like this, then the spinner spins for about 0.5 secs and initiates the exit animation… So I can’t figure this out on my own, could you please help me?