keep the whole block in the browser screen

[ooldesign]

Hi

I have my block positioned something like this

O O
O O O
O O

All circles except for the centre fades in while the middle circle rotates.
Everything is working fine, just that when the animation is finished, the top 2 circles are partially out of the browser window. I want to keep all of them within the browser window. How do I do it?

[ooldesign]