Added tutorial and session mechanism
diff --git a/public/scss/matchinfo.scss b/public/scss/matchinfo.scss
index d26c6e5..4341f23 100644
--- a/public/scss/matchinfo.scss
+++ b/public/scss/matchinfo.scss
@@ -208,14 +208,19 @@
 /**
  * SVG tree
  */
-
 path.edge {
   stroke: $darker-orange;
   stroke-width: 2px;
   fill: none;
 }
 
-g.middle > rect {
+g.root rect.empty {
+  stroke: $darker-orange;
+  fill: $darker-orange;
+  stroke-width: 2px;
+}
+
+g.middle rect {
   stroke: $darker-orange;
   stroke-width: 2px;
   fill: $middle-orange;