diff --git a/static/stylesheet/style.less b/static/stylesheet/style.less
index b8947a0..924f6ee 100644
--- a/static/stylesheet/style.less
+++ b/static/stylesheet/style.less
@@ -310,6 +310,12 @@ a.btn:hover {
   display: block;
 }
 
+.align-center {
+  margin-left: auto;
+  margin-right: auto;
+  display: block;
+}
+
 .float-left {
   float: left;
 }