Hiding a Media Query From Legacy user agents: the only keyword Note that the entire media query is negated, Unless another feature explicitly specifies that it affects the resolution of Media Queries.įor example, the following will apply to everything except color-capable screens. They’re only dependent on “external” information Media queries are (almost) always independent of the contents of the document, Or device that the document is being displayed in. Media QueriesĪ media query is a method of testing certain aspects of the user agent The em unit is relative to the initial value of font-size,ĭefined by the user agent or the user’s preferences, That units are never based on results of declarations. Relative length units in media queries are based on the initial value, which means For example, the pixel unit represents CSS pixels and The units used in media queries are the same as in other parts of CSS, asĭefined in. Modules may expand the definitions of these value types. Value types not defined in this specification, such as, or, are defined in. This module replaces and extends the Media Queries, Media Type and Media Featuresĭefined in sections 7 and in. Here is the same example written in HTML, XHTML, XML, and url(example.css) screen and (color), projection and screen and (color), projection and (color) In 1997, HTML4 defined a mechanism to support media-dependent style sheets,įor example, a document may use different style sheets for screen and for print.
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