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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.
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 .
Foundation is a free and open source framework for web development, created by ZURB and maintained by volunteers. It provides a responsive grid, HTML and CSS UI components, templates, and JavaScript extensions for various devices and browsers.
Learn about the tools and techniques used to create the graphical user interface of a website, such as HTML, CSS, JavaScript, and WebAssembly. Find out the goals and challenges of front-end development, such as accessibility, performance, and speedy development.
Learn about the principles, techniques, and history of responsive web design (RWD), an approach to web design that adapts to different devices and screen sizes. Find out how RWD differs from other approaches, such as mobile-first design and progressive enhancement.
CodePen is a platform for testing and showcasing HTML, CSS and JavaScript code snippets, founded in 2012 by three developers. It has over 330,000 registered users and 14 million monthly visitors, and functions as an open-source learning environment.
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