css syllabus

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc. This section describes CSS in more detail.

CSS is designed primarily to enable the separation of document content 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 by specifying the relevant CSS in a separate .css file, and reduce complexity and repetition in the structural content.

CSS is designed primarily to enable the separation of document content 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 by specifying the relevant CSS in a separate .css file, and reduce complexity and repetition in the structural content.

Separation of formatting and content also makes it feasible to present the same markup page in different styles for different rendering methods, such as on-screen, in print, by voice (via speech-based browser or screen reader), and on Braille-based tactile devices. CSS also has rules for alternate formatting if the content is accessed on a mobile device. The name cascading comes from the specified priority scheme to determine which style rule applies if more than one rule matches a particular element. This cascading priority scheme is predictable.

CSS also has rules for alternate formatting if the content is accessed on a mobile device. The name cascading comes from the specified priority scheme to determine which style rule applies if more than one rule matches a particular element. This cascading priority scheme is predictable.

The cascading in CSS refers to how the browser decides which property values it should use when there is more than one rule that could be applied to a certain element. When several rules apply, the browser will choose the rule with the most specific selector. In case of a tie, it will choose the rule that appears last in the code (below all others).

CSS has rules for both screen and print output devices: p {color: red; background-color: white} (screen) and @media print { p {color: black; background-color: white}} (print). Specific media types can also be specified, such as speech or braille.

There are two types of style sheets : embedded and external.

The primary formulation of CSS actually has two parts: level 1 (CSS1) and level 2 (CSS2). While CSS2 became a W3C Recommendation in May 1998, parts of it were re-written into other specifications so that some portions are defined by other modules such as Selectors and Box Alignment.

The primary formulation of CSS actually has two parts: level 1 (CSS1) and level 2 (CSS2). While CSS2 became a W3C Recommendation in May 1998, parts of it were re-written into other specifications so that some portions are defined by other modules such as Selectors and Box Alignment.

CSS3 was split into several separate documents called “modules”. This was done to publish new features without breaking the entire standard. For example, media queries, animation, gradients, transitions, shadows and filters are all considered modules.

The CSS2 specification was eventually updated with some revisions and is now called CSS 2.1. It became a W3C Recommendation on 7 June 2011. It has been criticized for being too large and failing to deliver much needed improvements to web accessibility

The features of CSS are controlled by various specifications created by the W3C. These include Media Queries (used for styling different media types), Namespaces (to support XML languages), Selectors Level 4 (also used with XML languages), Color Level 4 and others.

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