The WIGO titles are in the common.css file, rather than in the pages as they were originally so if you look at MediaWiki:common.css you should be able to find the styles. They can still be done using divs and styles if you use the __NOTITLE__ magic command to remove the actual header and replace it with one of your own. Just play with some CSS (try searching www.w3schools.com - I do recommend learning it, it's not as hard as you might think), you might not want to replicate the WIGO pages exactly but come up with something else - this, for instance, is a mocked-up potential replacement for the WIGO headers that has some interesting things in you might want to look at.
As for the transclusions, it's probably best to use "onlyinclude" instead so it transcludes what you want (say, the most recent month) rather than playing around telling it to remove half a dozen other pieces.
Mostly I'm off to bed now and might not be able to provide any direct work for a few days, but if you want me to have a stab at something myself, just ask.
Thanks for that. I wholesale copied your gravelbox for a moment, but I've since mutated it almost beyond recognition to avoid prosecution. Is there a better way to move a line to the right/left than repeated nbsp's?
I need to get back to learning CSS there. I wonder where I got up to...?
Float is witchcraft. Does anyone actually understand how it works?