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HTML is the standard markup language for web pages, defined by the W3C and ISO. Learn about its origins, elements, tags, attributes, versions and related technologies such as CSS, JavaScript and HTML5.
CSS is a language for specifying the presentation and styling of HTML or XML documents. Learn about its syntax, selectors, rules, properties, and applications in web design and development.
This script and CSS makes the sidebar stay in the same position on the screen as you scroll. This may have undesirable side effects in Chrome; e.g., when viewing a page like the very common.css page you just edited to put this code in, the viewable content will become much shorter, and require vertical scrolling in a frame.
W3Schools is a freemium educational website for learning coding online, launched in 1998 by Refsnes Data in Norway. It offers courses, tutorials, templates, and a live editor for various web technologies, such as HTML, CSS, JavaScript, Python, and more.
Learn what a style sheet is and how it separates content and presentation in web design. Find out the benefits, disadvantages, and examples of using style sheets with HTML or XHTML.
Learn about the W3C validator that checks HTML, XHTML, CSS and other web technologies for well-formed markup. Find out the history, limitations and browser accommodation of this service.
The Web Standards Project was formed and promoted browser compliance with HTML and CSS standards. Programs like Acid1, Acid2, and Acid3 were created in order to test browsers for compliance with web standards. In 2000, Internet Explorer was released for Mac, which was the first browser that fully supported HTML 4.01 and CSS 1.
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