HTML and CSS Reference
Figure1-3.Video playing in IE9 in compatibility mode, triggering the YouTube fallback
Before I return to the media elements, there is one more attribute supported on the source
element, though it is rarely used: the media attribute. The media attribute provides the inten-
ded media source for the element. The default value is all , which means the media file is
intended for all media sources. There are several other allowable values, but the two that make
most sense (other than all ) for media elements, especially video, are handheld and screen .
In combination with mediaqueriesin CSS, one can have a web page serve both desktop and