Update app.py

app.py

@@ -10,7 +10,7 @@ def create_amygdala_hijacking_graph():
     g.attr('node', fontname="Helvetica,Arial,sans-serif")
     g.attr('edge', fontname="Helvetica,Arial,sans-serif")
     g.attr('graph', newrank='true', nodesep='0.3', ranksep='0.2', overlap='true', splines='false')
-    g.attr('node', fixedsize='false', fontsize='24', height='1', shape='box', style='filled,setlinewidth(5)', width='2.2')
+    g.attr('node', fixedsize='false', fontsize='24', height='1', shape='box', style='filled,setlinewidth(5)', width='2.2', penwidth='3')
     g.attr('edge', arrowhead='none', arrowsize='0.5', labelfontname="Ubuntu", weight='10', style='filled,setlinewidth(5)')
 
     g.node('1', '👂 Sensory Input', fillcolor='lightblue')