ONOS-4359: continued work on theming UI (app details panel)

Change-Id: I0961dfd6a90785b3a1dc040d500500facc8e05ed
(cherry picked from commit bb1b7a3)
diff --git a/web/gui/src/main/webapp/app/fw/layer/panel.css b/web/gui/src/main/webapp/app/fw/layer/panel.css
index 6f0232d..17c5559 100644
--- a/web/gui/src/main/webapp/app/fw/layer/panel.css
+++ b/web/gui/src/main/webapp/app/fw/layer/panel.css
@@ -27,11 +27,8 @@
     right: -220px;
     opacity: 0;
 
-    padding: 10px;
+    padding: 2px;
     font-size: 10pt;
-
-    -moz-border-radius: 6px;
-    border-radius: 6px;
 }
 
 .floatpanel.dialog {