color change on hover for navbar and footer links

_sass/_hackimpott.scss

@@ -11,4 +11,8 @@
   &:visited {
     color:$nav-link-color;
   }
+
+  &:hover {
+    color:$nav-link-hover;
+  }
 }

css/main.scss

@@ -22,7 +22,8 @@ $grey-color-dark:  darken($grey-color, 25%);
 $on-palm:          600px;
 $on-laptop:        800px;
 
-$nav-link-color:  #FFF;
+$nav-link-color:   #FFF;
+$nav-link-hover:   #DDD;
 
 $primary-bg: #333;
 $link-primary: #FFF;