Thank you Excavator.
I'm afraid it still does not work. I must be doing somnething wrong, starting with the fact that I din not follow your instrucyions, YET; regarding colour because my page is quite well advances and if I start changing too much I'm lost!
I re-arranged the markup so the floats come first like they do in the example but it stlill does not work. See image below, please:
PS: what is markup? Code?