
HyperText Markup Language (HTML) is the standard markup language for documents designed to be
displayed in a web browser.
It defines the content and structure of web content. It is often
assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as
JavaScript.
Cascading Style Sheets (CSS) is a style sheet language used for specifying the presentation and
styling of a document written in a markup language such as HTML or XML (including XML dialects such
as SVG, MathML or XHTML).
CSS is a cornerstone technology of the World Wide Web, alongside HTML
and JavaScript.