diff --git a/swarmlab/index-doc.html b/swarmlab/index-doc.html
index c5d4dd7..080244a 100644
--- a/swarmlab/index-doc.html
+++ b/swarmlab/index-doc.html
@@ -282,6 +282,7 @@ Swarmlab is a powerful collaboration tool that connects tutors and students in a
                          </div>
                 <!-- video 1 -->
 
+
                 <!-- video 2 -->
                         <div class="card card-shadow text-center">
                             <div class="card-body">