Alright, this should be easy but I can't find a way to do it. I want to center a spinner in the center of a screen. The large one so I can show that work is being done. I can center horizontally but can't seem to get it to center vertically. This is in a hidden div on the scene. Any suggestions? Hoping for something that doesn't relay on knowing the screen size ahead of time so it works on more deceives then just the pre.