HTML <link> element

<link> tag defines a URL link to an external resource. It must located in the head section of the page. It is widely used for CSS file and Icon file linking of the web page.

The links of this web page:

<link href="/defaultcore.css" rel="stylesheet" type="text/css" />
<link rel="icon" href="/images/endmemo.png" type="image/x-icon"/>

Specific attributes of <audio> tag:
href URL of the external resource
rel Relationship between external resource and the web page, including icon, license, archives, author, search etc
type MIME type of the external resource
sizes sizes of the external resource, rel=icon only
hreflang language of the external resource
media device type