@font-face {
  font-family: "foo";
  src: url("http://example.com/foo.ttf");
}

@font-face {
  font-family: "bar baz bing";
  src: url("http://example.com/bar-baz-bing.ttf");
}

.bio { font-family: foo; }
@media (min-width: 900px) {
  .test { font-family: "bar baz bing"; }
  .test2 { font-family: "bar baz bing"; }
}