Deprecated: 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.
The contentStyleType attribute specifies the style sheet language for the given document fragment on the <svg> element.
This language is used for all instances of style that do not specify their own styling language, such as the style attribute that is available on many elements. The value specifies a media type, per MIME Part Two: Media Types [RFC2046].