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A web style sheet is a form of separation of content and presentation for web design in which the markup (i.e., HTML or XHTML) of a webpage contains the page's semantic content and structure, but does not define its visual layout (style). Instead, the style is defined in an external style sheet file using a style sheet language such as CSS or ...
Improving web presentation capabilities was a topic of interest to many in the web community and nine different style sheet languages were proposed on the www-style mailing list. [28] Of these nine proposals, two were especially influential on what became CSS: Cascading HTML Style Sheets [24] and Stream-based Style Sheet Proposal (SSP).
The CSS Working Group (Cascading Style Sheets Working Group) is a working group created by the World Wide Web Consortium (W3C) in 1997, to tackle issues that had not been addressed with CSS level 1. As of December 2022, the CSSWG had 147 members. [1] The working group is co-chaired by Rossen Atanassov and Alan Stearns.
One modern style sheet language with widespread use is Cascading Style Sheets (CSS), which is used to style documents written in HTML, XHTML, SVG, XUL, and other markup languages. For content in structured documents to be presented, a set of stylistic rules – describing, for example, colors, fonts and layout – must be applied.
For each user-definable style, a skin is first selected, along with a corresponding Cascading Style Sheet (CSS). For each skin, the user can make various choices regarding fonts, colors, positions of links in the margin, etc. CSS is specified with reference to selectors : HTML elements, classes, and ID's specified in the HTML code. Accordingly ...
For these reasons, and in support of a more semantic web, attributes attached to elements within HTML should describe their semantic purpose, rather than merely their intended display properties in one particular medium.
anywhere in a tag, for example xsl:value-of.select and xsl:variable.name. name() the name of the tag being processed. Useful if the matching criteria contains |s (pipe symbols). any conditional or match criterion, for example xsl:if.test, xsl:when.test, xsl:template.select and xsl:for-each.select. @ an attribute within the XML.
HTML is used to represent the structure or content of a document, its presentation remains the sole responsibility of CSS style sheets. A default style sheet is suggested as part of the CSS standard, giving a default rendering for HTML. [14] Behavior (interactivity) is also kept separate from content, and is handled by scripts.