I'm trying to add a black rectangle as a bakcground for the red div.
I managed to make the horizontal hard fade:
background: rgb(0,0,0);
background: linear-gradient(90deg, rgba(0,0,0,1) 60%, rgba(208,6,30,1) 60%);
It seems it's either horizontal or vertical. Can I do both?
I'd like to do this with CSS, not add a black image as background.
