CSS (Cascading Style Sheets) is a format for laying out html content, commissioned by the W3C. When HTML was first created, it was a format for documents. There were ways to format text, (making it bold, changing the size, color, etc.), there were ways to insert images, but there wasn’t really a way to layout a page. People who really knew HTML began using tables to lay out pages, since it was the only real way to control page...