These pages provide an overview of how standards influence web design. Starting with a review of the four principles of a web site for an organisation and the problems associated with how operating systems and browsers display pages.

Some common errors will be described and suggestions as to how w3c's validation service can assist in not only identifying them but also fixing some too.

The advantages of using CSS stylesheets will be illustrated and you will find lots of useful links to other resources for further study.

Understanding w3C standards is a specified requirement for a Distinction grade in Unit 21, Web site development. Knowing how to use the basic validation tools, and why standards are important, is of great value for anyone creating web sites for other than purely personal use and so these pages will be beneficial for other aspects of Unit 21 and also are relevant to Unit 10 CSS scripting.