HTML Checking for Large Sites
Rocket Validator integrates the W3C Validator HTML checker into an automated web crawler.
HTML issues tagged as media queries.
Bad value “screen,projection” for attribute “media” on element “link”: The media “projection” has been deprecated
The projection media type was deprecated in Media Queries 4.
Media types describe the general category of a device, for example screen, print and speech.
CSS 2.1 and Media Queries 3 defined several additional media types (tty, tv, projection, handheld, braille, embossed, and aural), but they were deprecated in Media Queries 4 and shouldn’t be used.
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