This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. 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This feature is obsolete.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.|