I'm trying to make a copy of a website as my first CSS/HTML exercise.
I can't figure out how to make the menu list so it has its background filling the box (extending until the right border).
Picture of what I have now (right side of the picture, red lines show where the background should go) and what I want to get (left side).
I've tried so far to achieve it e.g. with 'width' and 'display' parameters, but e.g.