This is the 756th most frequent Danish word.
øverst
"Øverst" means "uppermost" or "at the top" in English.
The word 'øverst' is used here to describe a position - specifically, the highest point of the stairs.
Han sidder øverst på trappen.
He is sitting at the top of the stairs.
'Øverst' describes the uppermost part of a vertical layout, in this case, the top section of a page.
Øverst på siden finder du menuen.
At the top of the page, you will find the menu.
In this context, 'øverst' is used metaphorically to indicate the foremost position in terms of achievement or ranking.