Rotating whole Lovelace view by 90/270 Degrees with CSS

Topic says it all - I am looking for a way to rotate my complete lovelace view by 90/270° via CSS

with the tag

transform:rotate(90deg)

is this possible? I am very new to CSS, so no clue how to do it.

Background story:
Using a specific view in kiosk mode for a magicmirror on an raspberry pi.
Want to use raspi GPU to accelerate graphics (FKMS) - but very bad performance when screen should be rotated.

Thanks in advance

hey mate did you have any luck with this ?