diff -r 406238db2efa -r f853d1e224e8 static/css/bootstrap.css
--- a/static/css/bootstrap.css	Fri May 16 12:49:14 2014 +0200
+++ b/static/css/bootstrap.css	Fri May 16 12:57:00 2014 +0200
@@ -6034,7 +6034,7 @@
 ------------------------------------ */
 .module-gallery {
   background: url('../images/institut.jpg') no-repeat;
-  background-size: 4399px 700px;
+  background-size: 1931px 500px;
 }
 
 .module-gallery .module-content {