CSS delivered as plaintext on github pages

Question

My github pages site @americano-project.github.io is transferring css files as plaintext, not text/css, causing my browser(firefox 25.0.1) not to load the css.

The css is embedded as so:

<link rel="stylesheet" type="text/css" src="/css/tmp.css" />
<link rel="stylesheet" type="text/css" src="/css/toast.css" />

The code is at a github repo, what is causing the problem?

Answer 1

It should be href, not src (Chrome 33 also did not parse them for me until I changed the src to href).

<link rel="stylesheet" type="text/css" href="/css/tmp.css" />
<link rel="stylesheet" type="text/css" href="/css/toast.css" />