Style-sheet organization: where stuff is… or should be, and why.
In this 2nd part of the series on “How to Customize Responsive WordPress Themes”, we’re gonna take a look at the differences between the style-sheets for regular WordPress themes and responsive ones. We’ll also see how they should be structured, and why some theme designers put responsive styles in separate files.
If you’re new to CSS, you may want to bone up before diving into this series. See the end of this article for a few great resources to get you started.
“Classic” non-responsive WordPress theme style-sheets