16. Resources for CSS

W3schools

Website with a practical and direct style. It has many examples.

• CSS Tutorial at w3schools
• CSS Reference
• CSS Examples

Website Style Guide

Very complete guide for the design of web pages. It covers all important topics from website structure, interface design or typography to editorial style.

The latest version is distributed under a CC BY license.

• Web Style Guide 3rd edition
• Web Style Guide (free)

Web development

• CSS in depth
• The best tools to generate CSS