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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  3. HTML - Wikipedia

    en.wikipedia.org/wiki/HTML

    Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript.

  4. HTTP - Wikipedia

    en.wikipedia.org/wiki/HTTP

    t. e. HTTP (Hypertext Transfer Protocol) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. [ 1 ] HTTP is the foundation of data communication for the World Wide Web, where hypertext documents include hyperlinks to other resources that the user can easily access ...

  5. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    The HTTP specification suggests the phrase "Not Found" [1] and many web servers by default issue an HTML page that includes both the 404 code and the "Not Found" phrase.

  6. HTML5 - Wikipedia

    en.wikipedia.org/wiki/HTML5

    HTML5 (Hypertext Markup Language 5) is a markup language used for structuring and presenting hypertext documents on the World Wide Web. It was the fifth and final [4] major HTML version that is now a retired World Wide Web Consortium (W3C) recommendation. The current specification is known as the HTML Living Standard.

  7. Web page - Wikipedia

    en.wikipedia.org/wiki/Web_page

    A web page is a structured document. The core element is a text file written in the HyperText Markup Language (HTML). This specifies the content of the page, [3] including images and video. Cascading Style Sheets (CSS) specify the presentation of the page. [3] CSS rules can be in separate text files or embedded within the HTML file.

  8. Web colors - Wikipedia

    en.wikipedia.org/wiki/Web_colors

    e. Web colors are colors used in displaying web pages on the World Wide Web; they can be described by way of three methods: a color may be specified as an RGB triplet, in hexadecimal format (a hex triplet) or according to its common English name in some cases. A color tool or other graphics software is often used to generate color values.

  9. Markup language - Wikipedia

    en.wikipedia.org/wiki/Markup_language

    The markup can be converted programmatically for display into, for example, HTML, PDF or Rich Text Format. A markup language is a text-encoding system which specifies the structure and formatting of a document and potentially the relationships among its parts. [1] Markup can control the display of a document or enrich its content to facilitate ...