GUI - adjust styling of ONOS instances.

Change-Id: I02c6136eb7f34e27b501f662774eb017aab1cdd0
diff --git a/web/gui/src/main/webapp/topo2.css b/web/gui/src/main/webapp/topo2.css
index 4fd3d71..20ed2fd 100644
--- a/web/gui/src/main/webapp/topo2.css
+++ b/web/gui/src/main/webapp/topo2.css
@@ -236,33 +236,36 @@
 /* ONOS instance stuff */
 
 #topo-oibox {
-    width: 80px;
+    width: 120px;
 }
 
 #topo-oibox .onosInst {
     position: relative;
-    width: 80%;
-    left: 10%;
+    width: 88%;
+    left: 4%;
     height: 80px;
-    margin: 4px 0;
+    margin: 8px 0;
     cursor: pointer;
 
+    -moz-border-radius: 12px;
+    border-radius: 12px;
+
     /* theme-related */
     color: #444;
     background-color: #ccc;
-    border: 2px solid #aaa;
+    border: 4px solid #aaa;
 }
 
 #topo-oibox .onosInst.online {
     /* theme-related */
     color: #113;
-    background-color: #bbf;
-    border: 2px solid #555;
+    background-color: #9cf;
+    border: 4px solid #357;
 }
 
 #topo-oibox .onosInst .onosTitle {
     text-align: center;
-    font-size: 11pt;
+    font-size: 10pt;
     margin-top: 6px;
     color: #888;
 }