Cascading vogue Sheets (CSS) could be a sheet language used for describing the presentation of a document written in an exceedingly nomenclature. though most frequently accustomed set the visual form of sites and user interfaces written in hypertext markup language and XHTML, the
language is applied to any XML document, as well as plain XML, SVG and XUL, and is applicable to rendering in speech, or on different media. at the side of hypertext markup language and JavaScript, CSS could be a cornerstone technology utilized by most websites to make visually participating webpages, user interfaces for net applications, and user interfaces for several mobile applications.
CSS is intended primarily to alter the separation of document content from document presentation, as well as aspects like the layout, colors, and fonts. This separation will improve content accessibility, offer additional flexibility and management within the specification of presentation characteristics, alter multiple hypertext markup language pages to share data formatting by specifying the relevant CSS in an exceedingly separate .css file, and scale back quality and repetition within the structural content.
Separation of data formatting and content makes it doable to gift identical markup page in several designs for various rendering strategies, like on-screen, in print, by voice (via speech-based browser or screen reader), and on Braille-based tactile devices. It may show the online page otherwise betting on the screen size or viewing device. Readers may specify a unique sheet, like a CSS file hold on on their own pc, to override the one the author given.
Changes to the graphic style of a document (or many documents) is applied quickly and simply, by piece of writing some lines within the CSS file they use, instead of by ever-changing markup within the documents.
The CSS specification describes a priority theme to see that vogue rules apply if quite one rule matches against a selected component. during this questionable cascade, priorities (or weights) square measure calculated and appointed to rules, so the results square measure certain.
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