issue MSX-39

dash_app/graph.py

@@ -85,6 +85,7 @@ class Graph:
                               elements=elements,
                               userZoomingEnabled=False,
                               userPanningEnabled=False,
+                              maxZoom=2.0,
                               stylesheet=[
                                   {
                                       'selector': '[is_base_node > 0.5]',