Good afternoon, I often scroll through pages using the space bar, but sometimes the browser scrolls a little more than necessary in this way, which is why a small part of the document is skipped or hidden under the navigation header. Or the semantic connection is simply lost and you need to quickly scroll down and return to the previous page. My suggestion is this: set up the same spacebar key for this action, but only for a longer press (2-3 seconds). Just go back one page and that's it.