Rocket Validator automatically checks your pages on the W3C Validator.
HTML issues tagged as deprecated.
projection media type was deprecated in Media Queries 4.
Media types describe the general category of a device, for example
CSS 2.1 and Media Queries 3 defined several additional media types (
aural), but they were deprecated in Media Queries 4 and shouldn’t be used.
Still checking your large sites one page at a time?
Save time using our automated web checker. Let our crawler check your web pages on the W3C Validator.