2nd HTML/CSS practice. Absolute Position NIGHTMARE😵‍💫

Working with Absolute Position turned into a nightmare when I tried to use the Bottom and Right properties for the right background circle in the same way I had used Top and Left for the left background circle: to hide a portion of it. However, Bottom and Right kept expanding the sizes of the parent and the HTML and, from what I gathered, it's impossible to avoid this. I figured out I could at least use "overflow: hidden" to somewhat sort of try to hide this, but I still spent quite a bit of time trying to figure out/research a way to stop Bottom and Right from expanding the page, alas, to no avail.