Every web page you create in DW will need to have a .html, .htm, .shtml, .shtm or .php file extension. This tells browsers & your server that it is a web page.
CSS is not an HTML document.
If you want exercise to be the url, you must create an index.html page and put it inside a folder named exercise.
In the DW Files Panel (F8), your local site would look something like this:
SITENAME (C:\your_site_folder)
+exercise
index.html
+about
index.html
+contact
index.html
index.html (your site's home page)
Personally, I don't see any value in doing this. It just makes your site more complicated with all those extra index pages.
Nancy O.
