Even though WordPress makes it so easy to update things with just a single click, you always still need to update responsibly.
Recently, I gave Theme Blvd's developer documentation website a major update, revisiting all of its content. Of course, in support, the most common customizations questions I get asked are usually related to CSS. So, I decided to add a new chapter about CSS. It covers all of the basics to get you started and is mostly just general information.