CSS font fix

static/klaus.css

 @charset "utf-8";
 
-body { margin: 0; padding: 0; font-size: 11pt; font-family: sans; }
+body { margin: 0; padding: 0; font-size: 11pt; font-family: sans-serif; }
 pre { font-size: 10pt; }
 a, a:visited { color: #003278; text-decoration: none; }
 a:hover { text-decoration: underline; }