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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.
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.
Bootstrap is a free and open-source library that simplifies the creation of responsive, mobile-first web pages with HTML, CSS and JS. It provides design templates, components and utilities for typography, forms, navigation, and more.
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.
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.
A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes , radio buttons , or text fields .
An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). [vague] The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML.
Learn how to use character entity references in XML and HTML documents, and see the list of predefined and custom entities for various scripts and symbols. Find out the differences between numeric and character entity references, and the formal public identifiers for HTML DTD entities subsets.