If you have Uikit you most likely know of @Ricardo and his Axyn stacks for UIkit3. His brilliant Container Plus stack just got an update and now has fixed height control and vertical alignment.
These new settings compliment the fixed width based on screen size and manual width settings.
This means that you can now create a container, on it’s own or in a grid, that has a size based on the screen. So if you wanted to split the screen into four equal quarters it’s really easy.
It’s here: https://axyn.com/site/products/
(I’m not connected to @Ricardo, other than using his stacks and chatting to him on here!)