I've just put a fixed width and height in my CSS code, removed some code that was duplicated several times in my signature, now testing it out to see if it still triggers any scroll bars to appear. As far as I can see, it hasn't so far. Perhaps the CSS code on top of each other made the forum think that one was adding to the height of each other, even though it was within limits? It could very well be a bug with the forum. I'd just like everyone to verify if any scroll bars appear on their end (since it may still happen with different forum styles). And also, please let me know on what I can do to improve my CSS code in future, if scroll bars start to appear.
Also, I was wondering. Did the signature disable (even though it was within the limits) a week ago still count towards a violation strike towards my signature? Or was it just an accidental disable? Just curious.