How does <href> and <link> tags work here?

Question

How does tags <href> and <link> work in code playground?

Answer 1

How ??? What do you mean by how?
And, there is no <href> tag. There is <a> tag.
Some links you may find useful
https://developer.mozilla.org/en/docs/Web/HTML/Element/a
<a> - HTML | MDN
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link
<link>: The External Resource Link element - HTML | MDN

Answer 2

Yeah sorry I mean href and link attribute in <a>.
I wanted to link external code from sololearn's code playground and that code is saved in my codes.