I've seen an curious code example.
I don't know completely what center center / cover
means.
center center
means center the background
cover
means adjust the background to the area
But what does center center / cover
mean?
background {transparent url(...) no-repeat scroll center center / cover;}
From https://developer.mozilla.org/en/docs/Web/CSS/background
<bg-size>
See background-size. This property must be specified after<position>
, separated with the '/' character.
i.e. it just seperates the background size from the position