I have been reading about using layouts and have created a helloworld-layout.rhtml file in my layouts directory. Works nicely.

However, I tried sticking the CSS file in the same directory and referencing it as thus:

<link href="helloworld-layout.css" rel="stylesheet" type="text/css"/>
When I load the page it doesn't pull over the CSS. I tried a few other references in case I needed to put the full path, etc, but no luck.

Am I doing something wrong?