The <source> element
    Specifies a file which can be used for video or audio data in a <video> or <audio> element respectively, or for a particular image that can be selected by MIME type and media query in a <picture> element.
This is an empty element, so it shouldn't have a closing tag.
Full list of attributes
All the usual HTML global attributes are available
- media
- A media query that the browser can used to select an appropriate source.  It defaults to all.
- src
- The URI of the media resource.
- type
- The MIME type of the video, audio, or image file this element represents.  The MIME codecsparameter can be used to refine this information.