A tag is a string of characters that tell the web browser how to render a part of a web page.
Tags determine the color and size of fonts, where the images are placed, and so on.
This guide is intended to instruct the newcomer to HTML in the methods of writing HTML 4.0 valid documents. Only the basic tags will be covered here. Please select a chapter from the list on the left. This site gives definitions of the HTML tags and shows examples of what each tag does. This complete guide is chock full of examples, sample code, and practical, hands-on advice to help you create truly effective Web pages and master advanced features.