Serving static resources with relative paths in Clojure to different routes

I'm building off of the lein new compojure-app template. I've got a route to / which works fine, as well as a route to /foo/ that works. Between the two pages, only the body changes, so I would like to stick as much as I can into a common view function (I'm using the default common in views/layout.clj). However, when serving resources by relative path, like css/main.css, my route to / works fine, but the route to /foo/ is looking for /foo/css/main.css instead of looking in the root directory. How do I serve static resources with relative paths to arbitrary routes?