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  2. Help:HTML in wikitext - Wikipedia

    en.wikipedia.org/wiki/Help:HTML_in_wikitext

    The MediaWiki software, which drives Wikipedia, allows the use of a subset of HTML 5 elements, or tags and their attributes, for presentation formatting. But most HTML can be included by using equivalent wiki markup or templates; these are generally preferred within articles, as they are sometimes simpler for most editors and less intrusive in the editing window; but Wikipedia's Manual of ...

  3. CSS box model - Wikipedia

    en.wikipedia.org/wiki/CSS_box_model

    The Cascading Style Sheets (CSS) specification describes how elements of web pages are displayed by graphical browsers. Section 4 of the CSS1 specification defines a "formatting model" that gives block-level elements—such as p and blockquote—a width and height, and three levels of boxes surrounding it: padding, borders, and margins. [4]

  4. W3C Markup Validation Service - Wikipedia

    en.wikipedia.org/wiki/W3C_Markup_Validation_Service

    The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD).

  5. Holy grail (web design) - Wikipedia

    en.wikipedia.org/wiki/Holy_grail_(web_design)

    Holy grail Layout with Dropping Footer. The holy grail is a web page layout which has multiple equal-height columns that are defined with style sheets. It is commonly desired and implemented, but for many years, the various ways in which it could be implemented with available technologies all had drawbacks. [1]

  6. Front-end web development - Wikipedia

    en.wikipedia.org/wiki/Front-end_web_development

    JavaScript code can use the Document Object Model (DOM), provided by the HTML standard, to manipulate a web page in response to events, like user input. Using a technique called AJAX , JavaScript code can also actively retrieve content from the web (independent of the original HTML page retrieval), and also react to server-side events as well ...

  7. CSS grid layout - Wikipedia

    en.wikipedia.org/wiki/CSS_grid_layout

    The first comprehensive draft of a grid layout for CSS was created by Phil Cupp at Microsoft in 2011 and implemented in Internet Explorer 10 behind a -ms-vendor prefix.The syntax was restructured and further refined through several iterations in the CSS Working Group, led primarily by Elika Etemad and Tab Atkins Jr.

  8. Stylus (style sheet language) - Wikipedia

    en.wikipedia.org/wiki/Stylus_(style_sheet_language)

    Stylus is a dynamic stylesheet preprocessor language that is compiled into Cascading Style Sheets (CSS). Its design is influenced by Sass and Less.It is regarded as the fourth most used CSS preprocessor syntax. [3]

  9. Codecademy - Wikipedia

    en.wikipedia.org/wiki/Codecademy

    The platform provides a hands-on learning experience, allowing users to write and execute code directly within their web browsers. Codecademy offers courses covering languages such as Python, JavaScript, HTML/CSS, and Ruby, as well as specialized topics like web development, data science, and machine learning.