Pushing changes for [ONOS-5469] : Add detail panel infrastructure

Change-Id: If402282cf70b37b7ee4cee14c57e9a9311f57842
diff --git a/web/gui/src/main/webapp/app/view/cluster/cluster.css b/web/gui/src/main/webapp/app/view/cluster/cluster.css
index fab5069..2ed0f63 100644
--- a/web/gui/src/main/webapp/app/view/cluster/cluster.css
+++ b/web/gui/src/main/webapp/app/view/cluster/cluster.css
@@ -24,4 +24,34 @@
 
 #ov-cluster div.ctrl-btns {
     width: 45px;
-}
\ No newline at end of file
+}
+
+
+/* More in generic panel.css */
+
+#node-details-panel.floatpanel {
+    z-index: 0;
+}
+
+
+#node-details-panel .container {
+    padding: 8px 12px;
+}
+
+#node-details-panel .close-btn {
+    position: absolute;
+    right: 12px;
+    top: 12px;
+    cursor: pointer;
+}
+
+#node-details-panel .dev-icon {
+    display: inline-block;
+    padding: 0 6px 0 0;
+    vertical-align: middle;
+}
+
+#flow-details-panel h2 {
+    display: inline-block;
+    margin: 8px 0;
+}