Improved readability

Since I’m producing rather long posts these days (and there are more to come), I figured out that some adjustment in the the layout of the pages would be more than welcome.

Nothing has changed on the home page, but when clicking on the title of a post (or following the links in a feed reader), the new width, line-height and font-size should prevent the “there’s-no-way-I’m-reading-that!” effect.