Hi Steve,
OK, try the attached styles.css and nightsky.php. Please make sure you copy or rename your old files just in case...
I gave you some bad code last night, apologies, there was an extra " in one of the lines. Always amazes me how a missing ; or " or ) really messes things up. As for the changes here I decided to "draw a line" as they say under where the RH and LH columns finished and started again, I just found it easier rather than trying to muddle my way through it. I hope this is what you were looking for.
As for using Cumulus MX, take a look at my site, particularly the gauges and trends sections which I think are much better than Cumulus 1. I have a WB_2 version available, and we can incorporate your new pages. I will PM you with an "offer".
My site is at
http://www.midlifedad.me.uk/weatherYou now have me looking at adding these "astronomy" sections to my site as well.
Let me know how you get on. Look forward to visiting your site and seeing it in action.
If there is anything else, just ask.
Have fun.
Andy