I have been trying endlessly to customize the main.css file from the Plain Yogurt theme. If I do a view source of my homepage I can see that the path to the file is:

<link rel="stylesheet" media="screen" type="text/css" href="/index.php/tools/css/themes/default/main.css" />

The tools folder is empty on the FTP and that path does not exist.

I then copied the main.css file from the concrete folder and created a path like it shows in the view source. I made some changes to it but nothing happens, the changes don't show up on the site.

Any ideas?