In bootstrap there is a rule that the cols should be up to 12. With that i know that for exemple if i want to divide between 2 divs, i should place the cols with number 6.
Is there anything similar for the heght? Because alot of the times i use pixels, but if i want that the content stays on the page heigh like the cols stay with the page with i cant.
The rows have to be up to 12 for exemple. With this i know how to size the heigh of my cols.
I have some problems with widh, because i dont want my website to be scrolable.