thumbnails.less in less-rails-bootstrap-2.0.6

- old
+ new

@@ -1,15 +1,15 @@
 // THUMBNAILS
 // ----------
 
 .thumbnails {
-  margin-left: -20px;
+  margin-left: -@gridGutterWidth;
   list-style: none;
   .clearfix();
 }
 .thumbnails > li {
   float: left;
-  margin: 0 0 @baseLineHeight 20px;
+  margin: 0 0 @baseLineHeight @gridGutterWidth;
 }
 .thumbnail {
   display: block;
   padding: 4px;
   line-height: 1;