Close the topo2 instance panel on navigation
topo and topo2 instance panel css seperated

Change-Id: I4460471d424100f942cc6f19c964437b649d01b2
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2.css b/web/gui/src/main/webapp/app/view/topo2/topo2.css
index c40dd1e..02ad958 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2.css
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2.css
@@ -63,7 +63,7 @@
     margin-right: 20px;
 }
 
-.floatpanel {
+#topo2-p-instance.floatpanel {
     top: 104px;
 }
 
@@ -72,4 +72,4 @@
 #ov-topo2 svg .node {
     cursor: pointer;
     fill-rule: evenodd;
-}
\ No newline at end of file
+}