How do i lock cssu hildon-desktop to use landscape mode permanently?

Remember the mainframeterminals from the 70s or arcademachines from the early 80s ? they also were in portraitmode... and always with a black background with orange, green or white graphics.

in the 80s we got modern looking landscapeterminals with colour
- apple classic was the last computer sold that had a screen with portraitmode in black and white...