ColdFusion, HTML, CSS
ColdFusion does the exact same things PHP can and then some, the big difference is how many less lines of code you have to write to do the exact same thing! In PHP, it takes many lines of code just to connect to an SQL database, but in ColdFusion, I can do it in as little as 3 lines of code.
The HTML and CSS are just add ons to the ColdFusion. You have to know HTML for almost any language. It's used in PHP, ColdFusion, ASP, and many others. Same with CSS.