My talk at Apache Barcamp Spain 2011. It includes a developer approach about how to get started with CSS if you do not have a web design background. Includes answers to the too-well-known question "What did I break now?". During these 32 slides some basic concepts like the browser box model get explained, and some CSS frameworks are introduced. This presentation (together with our "CSS3 101" talk) got the award to the best presentation at Apache Barcamp Spain.