Sometimes you have to refresh your browser to get it to load the new styles, as it will have the old ones cached. You could also change the name of the style sheet each time to force the issue, though that’s a bit of a pain. Or clear the browser cache.
Browsers are like girls. They are unpredictable. Thank you for that. I don’t know what I did. I just installed firebug light and see, when I his refresh, it went well.