I'm used to do theming with Drupal 6 using the Firefox/Google Chrome "Web Developer Toolbar". I was able to edit the css files directly while getting the result displayed at the same time. This worked really fine for Drupal 6.
Now I started theming with Drupal 7 and I'm experiencing some problems:
I installed Drupal 7 (with the zen theme and zenophile module).
Then I started the Web Developer Toolbar and wanted to display the CSS files with "edit css" as usually. At this moment, parts of the site vanished, e.g. the blocks and the menues. I only see the middle part of the site.
I tried to disable some css files - nothing changed.
I deleted all rtl-CSS-files to reduce the number of CSS files - nothing changed.
Then I discovered that if you enable "aggregate and compress CSS files" (development --> performance) and use the Web Developer Toolbar to display the CSS files, everything looks fine, there are only 4 CSS files left, but (logically) you aren't able to edit these compressed CSS files any more. So that's not the solution to my problem.
The problem is not a zen/zenophile problem - I have the same problem with all themes I tried.
Now I suppose that the Webdeveloper Toolbar has some problems because there are too many CSS files in Drupal 7?
Or is there another explanation for my problems?
Does anyone else here have the same problems?