photo © 2007 Dan Brady | more info (via: Wylio)First things first: if things look a little wacky for you, your browser is probably using the old CSS file. Refresh. That should force the new CSS file to be downloaded and used.
Second: the changes to the CSS are two-fold. The main impetus was to allow for the second rightmost sidebar to be hidden/shown. Originally both sidebars were absolutely positioned and so, to enable this new behavior, I had to float all three columns (content, sidebar 1, sidebar 2). That way, when the third column is hidden, the other two can grow/move correctly (and when it is shown, they can shrink/move back). The other main point of the CSS tweaking was to make the display of comments nicer. Previously the size of a single comment block was the maximum of the height of the metadata/avatar part to the left of the content or the height of the content itself. The first possibility made the gaps between comment blocks uneven and look bad, so I fixed this.
These changes should help those readers who are using a smaller screen (say, 1024 pixels wide) see the main content more easily. I have had a couple of emails complaining about the old layout, so these changes should alleviate the problem.
Heaven 17 - This Is Mine (2006 Digital Remaster)
(from Greatest Hits - Sight And Sound)