--- a/src/pyams_default_theme/resources/less/pyams-default.less	Wed Jul 18 01:57:25 2018 +0200
+++ b/src/pyams_default_theme/resources/less/pyams-default.less	Wed Jul 18 01:57:37 2018 +0200
@@ -46,3 +46,13 @@
 		}
 	}
 }
+
+
+.margin-bottom {
+	&-10 {
+		margin-bottom: 10px;
+	}
+	&-20 {
+		margin-bottom: 20px;
+	}
+}