Cascading Style Sheets (CSS) is a style sheet
language used for describing the presentation semantics (the look and
formatting) of a document written in a markup language. Its most common
application is to style web pages written in HTML and XHTML, but the language can also be applied to any kind of XML document, including plain XML, SVG and XUL.
CSS is designed primarily to enable the separation of document content
(written in HTML or a similar markup language) from document
presentation, including elements such as the layout, colors, and fonts.
This separation can improve content accessibility, provide more
flexibility and control in the specification of presentation
characteristics, enable multiple pages to share formatting, and reduce
complexity and repetition in the structural content (such as by
allowing for tableless web design). CSS can also allow the same markup
page to be presented in different 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 used to allow the web page to display
differently depending on the screen size or device on which it is being
viewed. While the author of a document typically links that document to
a CSS style sheet, readers can use a different style sheet, perhaps one on their own computer, to override the one the author has specified.
CSS specifies a priority scheme to determine which style rules apply if
more than one rule matches 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 maintained by the World Wide Web Consortium (W3C).
This book is useful for those people who have some now how about HTML,
they can learn CSS from this book. This Book contains 459 pages.
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