Web design is a process of planning, conceptualization, modeling, and execution of electronic media content delivery via Internet or World Wide Web (www) in the form of Markup language such as HTML suitable for interpretation by IE, Firefox, Opera, Safari etc. (Web browsers) that's display as a Graphical user interface (GUI).
Improvements in browser compliance with W3C standards prompted a widespread acceptance and usage of XHTML/XML in conjunction with Cascading Style Sheets (CSS) to position and manipulate web site page elements.
The intent of web design is to create a web site a collection of pages that reside on a web server. Such elements as text, images (GIFs, JPEGs, PNGs), forms can be placed on the page using HTML/XHTML/XML tags.
Displaying more complex media link 'vector graphics', 'animations', 'videos', etc. requires plug-ins such as Flash, QuickTime etc.