I have seen some CSS implemented on a page in the following way.
<style type="text/css">
@import url(/css/style.css);
</style>

I thought the way to implement CSS was using the following text
<link rel="stylesheet" type="text/css" href="/css/style.css" />

Why would you use the first method ( @import url(/css/style.css);
)?
are there adavatages to ussing this method?
does it help in SEO?


Also in some cases I have seen both methods used, one for the scree css and the other for the print css. I am a little confused.