diff --git a/web/ons-demo/css/layout.default.css b/web/ons-demo/css/layout.default.css
index 647763c..b9a5ebe 100644
--- a/web/ons-demo/css/layout.default.css
+++ b/web/ons-demo/css/layout.default.css
@@ -37,12 +37,34 @@
 }
 
 /* tmp */
-#controllers, #selectedFlows {
+#selectedFlows {
 	display: -webkit-box;
 	-webkit-box-align: center;
 	-webkit-box-pack: center;
 }
 
+#controllers {
+	display: -webkit-box;
+	-webkit-box-orient: vertical;
+}
+
+#controllers .header {
+	-webkit-box-pack: center;
+	border-bottom: 1px solid white;
+}
+
+#controllerList {
+	display: -webkit-box;
+	-webkit-box-orient: vertical;
+	-webkit-box-flex: 1.0;
+	overflow: scroll;
+}
+
+.controller {
+	margin: .25em;
+	background-color: blue;
+}
+
 #svg-container {
 	position: absolute;
 	top: 0px;