What seems to be the issue? Any error messages? Just not understanding something? The more details you give us, the better we can help
Might try adding a slash to the end of your <link> since they mention it being a self closing tag. This isn’t technically needed in HTML but I think several of the lessons require it.
but this is wrong, code in vs studio code. i’ve never need to put a slash at the end of link tag. same with other small self closing tags i know like img, hr, br