Add link styles

static/css/main.css

@@ -5,6 +5,15 @@ body {
   font-family: Helvetica, Arial, sans-serif;
 }
 
+a {
+  color: #333;
+  text-decoration: none;
+}
+
+a:visited {
+  color: #777;
+}
+
 .quote {
   font-family: monospace;
   border: 0px #777 solid;