Background Positioning Hack

Hey, I am back with my third problem solved. I found this challege interesting because positioning the circles on the background gave me a little trouble, at firts i tried doing it with responsive dimentios until I found out that the circles wer not streching or shrinking (my opinion analizing the design image) so I used a trick with min-height and min-width on a container. If you have any suggestions on how to do it differently please let me know.