HTML is a computer language which was developed in 1980 for the creation of websites. Constantly undergoing revision and evolution, it has powerful capabilities but also some drawbacks.
HTML stands for Hyper Text Markup Language.
HyperText is the method by which you move around on the web by the use of hyperlinks.
Markup is the term given to the HTML ‘tags’ which determine the sections of code.
HTML5 is a W3C (World Wide Web Consortium) specification that sets out and defines the 5th revision of the HTML (Hypertext Markup Language).
HTML5 first came to public use in January 2008 to replace the previous versions of XHTML and HTML4 which began in 1997.
Cascading Style Sheets, simply referred to as CSS is a style sheet language which is used to format the presentation of a document written in a markup language such as HTML.
The language can be applied to any XML document but it is usually associated with web pages and user interfaces written in HTML and XHTML language.