[style] [upgrade] moved to bootstrap 3
diff --git a/home/page/attributions/attributions.html b/home/page/attributions/attributions.html
index f614bb1..e6142f7 100644
--- a/home/page/attributions/attributions.html
+++ b/home/page/attributions/attributions.html
@@ -1,4 +1,4 @@
-<div class="appframe span12 layout-attributions">
+<div class="appframe col-span-12 layout-attributions">
<div class="layout-appframe"></div>
<div class="layout-main">
<h3>ERPNext is made using these Awesome Open Source Projects <i class="icon-heart" style="color: red"></i></h3>