Duke infosys provide all the basic of css. CSS stands for Cascading Style Sheets and i.e. is a stylesheet language used to describe the presentation of a document written in HTML or XML.It describes how elements should be presented on screen, on paper and in other media.

CSS is one of the core languages of the open Web and is standardized across Web browsers according to the W3C specification. Developed in levels, CSS1 is now obsolete, CSS2.1 is a recommendation, and CSS3, now split into smaller modules, is progressing on the standardization track.


XHTML stands for Extensible Hypertext Markup Language i.e a part of the family of XML markup language. It mirrors or extends versions of the widely used Hypertext Markup Language (HTML), the language in which Web pages are formulated.

Shortly, Duke will provide all information that is required for css and xhtml.