diff --git a/guacamole/src/main/webapp/styles/ui.css b/guacamole/src/main/webapp/styles/ui.css
index a109607a4..3cda0d345 100644
--- a/guacamole/src/main/webapp/styles/ui.css
+++ b/guacamole/src/main/webapp/styles/ui.css
@@ -305,6 +305,30 @@ div.section {
     background-image: url('../images/protocol-icons/guac-monitor.png');
 }
 
+/*
+ * Groups
+ */
+
+.group > .children {
+    margin-left: 13px;
+    padding-left: 6px;
+    display: none;
+}
+ 
+.group.expanded > .children {
+    display: block;
+    border-left: 1px dotted rgba(0, 0, 0, 0.25);
+}
+
+.group > .caption .icon.group {
+    opacity: 0.75;
+    background-image: url('../images/group-icons/guac-closed.png');
+}
+
+.group.expanded > .caption .icon.group {
+    background-image: url('../images/group-icons/guac-open.png');
+}
+
 /*
  * Settings formatting
  */