HTML / CSS

The definition of HTML is Hyper Text Markup Language.

• Hyper Text is the method by which you move around on the web — by clicking on special text called hyperlinks which bring you to the next page. The fact that it is hyper just means it is not linear — i.e. you can go to any place on the Internet whenever you want by clicking on links — there is no set order to do things in.
  
• Markup is what HTML tags do to the text inside them. They mark it as a certain type of text (italicized text, for example).
  
• HTML is a Language, as it has code-words and syntax like any other language.

Cascading Style Sheets or CSS allow you to control the layout and look of your page easily. CSS tags or properties are easy to use and affect the look and feel or style of your pages.