Base tree layout
diff --git a/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css b/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css
new file mode 100644
index 0000000..05b06ed
--- /dev/null
+++ b/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css
@@ -0,0 +1,25 @@
+service-canvas {
+ height: 100%;
+ width: 100%;
+ display: block;
+}
+
+.node {
+ cursor: pointer;
+}
+
+.node circle {
+ fill: #fff;
+ stroke: steelblue;
+ stroke-width: 3px;
+}
+
+.node text {
+ font: 12px sans-serif;
+}
+
+.link {
+ fill: none;
+ stroke: #ccc;
+ stroke-width: 2px;
+}
\ No newline at end of file