This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Obsolete since Gecko 6.0 (Firefox 6.0 / Thunderbird 6.0 / SeaMonkey 2.3)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Note: This media type has been deprecated in favor of
|CSS Level 2||Deprecated||Initial definition.|