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If a page's layout information is stored externally, a user can decide to disable the layout information entirely, leaving the site's bare content still in a readable form. Site authors may also offer multiple style sheets, which can be used to completely change the appearance of the site without altering any of its content.
Initially code-named "Cougar", [18] HTML 4.0 adopted many browser-specific element types and attributes, but also sought to phase out Netscape's visual markup features by marking them as deprecated in favor of style sheets. HTML 4 is an SGML application conforming to ISO 8879 – SGML.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikidata item; ... HTML5 Boilerplate is an HTML, CSS and JavaScript template ...
HTML5 is designed so that old browsers can safely ignore new HTML5 constructs. [8] In contrast to HTML 4.01, the HTML5 specification gives detailed rules for lexing and parsing , with the intent that compliant browsers will produce the same results when parsing incorrect syntax. [ 126 ]
In April 2009, YouTube launched their earliest HTML5 video player experiments. [73] Throughout 2009, the alphabetical sorting of YouTube's "AudioSwap" feature helped popularizing Alexander Perls' "009 Sound System" music project through frequent use in videos. [74] [75] YouTube XL logo used until 2013. In June 2009, YouTube XL was launched.
Web development is the work involved in developing a website for the Internet (World Wide Web) or an intranet (a private network). [1] Web development can range from developing a simple single static page of plain text to complex web applications, electronic businesses, and social network services.
If you are new to Wikipedia, you might consider using the standard article format for your userpage initially. That should suffice while you're learning the ropes. If you don't have a user page yet and don't know how to create a page, then click on your user name at the top of the screen and follow the instructions (if the page already exists, your username will be blue instead of red).
Luke Wroblewski has summarized some of the RWD and mobile design challenges and created a catalog of multi-device layout patterns. [15] [16] [17] He suggested that, compared with a simple HWD approach [clarification needed], device experience or RESS (responsive web design with server-side components) approaches can provide a user experience that is better optimized for mobile devices.