Know Java script

Css is a way sheet language used for recitation the presentation of a document in print in a markup language.Although most often used to set the visual style of web pages and user interfaces written in HTML and XHTML, the language can be applied to any XML document, including plain XML, SVG and XUL, and is applicable to representation in speech, or on other media. Along with HTML and JavaScript, CSS is a cornerstone technology used by most websites to produce visually engaging WebPages, user interfaces for web applications, and user interfaces for many mobile application. CSS is designed primarily to including aspect such as the layout, colors, and fonts. This separation can perk up content accessibility, supply more flexibility and control in the enable the separation of document content from document presentation, measurement of production characteristics, enable multiple HTML pages to share formatting by specify the relevant CSS in a separate .Css file, and reduce complexity and reiteration in the structural content. This separation of formatting and content makes it possible to present the same markup page in unusual styles for different rendering methods, such as on-screen, in print, by voice (when read out by a speech-based browser or screen reader) and on Braille-based, tactile devices. It can also be second-hand to at hand the web page differently depending on the screen size or device on which it is woman viewed. Readers can also specify a unlike style sheet, such as a CSS file stored on their own computer, to dominate the one the author has human being. Changes to the graphic design of a article (or hundreds of documents) can be useful quickly and easily, by editing a few lines in the CSS file they use, rather than by shifting markup in the documents. The CSS specification describes a priority scheme to determine which style rules apply if more than one rule match against a particular element. In this so-called cascade, priorities (or weights) are calculated and assigned to rules, so that the results are predictable. The CSS specifications are maintain by the World Wide Web conglomerate (W3C). Internet media type (MIME type) text/css is registered for use with CSS by RFC 2318 (March 1998). The W3C operates a free CSS validation service for CSS documents.