css: add links colors

static/style.css

@@ -17,6 +17,22 @@ body {
   body {
     background-color: #556262;
   }
+
+  a:link {
+    color: orange; /* unvisited link */
+  }
+
+  a:visited {
+    color: red; /* visited link */
+  }
+
+  a:hover {
+    color: white; /* mouse over link */
+  }
+
+  a:active {
+    color: yellow; /* selected link */
+  }
 }
 
 #main {