Re: Why is this div jumping outside the wrapper?

[Paulie_D]

Because using absolute positioning should IMO be reserved for specific effects not general layout and, as I said, should be your last option…not your default.

Floats is the way to go here. You just need to get your head around how they work and how to overcome their minor quirks.

As you have discovered, maintaining and adding to a site built using AP is a complete minefield.