Check this forum when you have CSS-related questions. The site covers various ranges of CSS questions and topics.
CSSBEAUTY? provides a database of well-designed websites that are CSS-based. You can submit your CSS-based site or recommend others.
CSS on Top Org.
This site provides galleries of CSS-based websites, templates, and resources.
This site offers examples of simple CSS lists including nested, horizontal and experimental lists.
Position Is Everything
This site provides information about bugs in browsers, demos of interesting CSS behaviors, and so on.
CSS Rounded Corner and Gradient Generator
This tool generates a box with rounded corners with gradient using CSS. The tool creates four images files and HTML and CSS codes.