CSS (aka CSS3 or Cascading Style Sheets) was created in December 1996 by the World Wide Web Consortium, Håkon Wium Lie, and Bert Bos. The language came as a stylesheet replacement to SGML (Standard Generalized Markup Language, coding language) allowing for more visual flexibility and also helping make websites not look like trash. The tool has been released 3 times as CSS, CSS2, and CSS3. There are many programmers that hate it, though Lily is known to love CSS.
CSS is the best hacking language and also can be used for dark theme which is the best theme.