Update styling for closed panel

Author: Marco Pereirinha

src/css/components/ui/_sidebar.scss

@@ -101,4 +101,14 @@
 			margin-bottom: 0;
 		}
 	}
+
+	.cld-ui-wrap {
+		.closed {
+			visibility: hidden;
+			max-height: 0;
+			padding: 0 !important;
+			border: none;
+			display: flex;
+		}
+	}
 }