Update app.py

app.py

@@ -132,7 +132,7 @@ def demo():
         flex-wrap: nowrap;
     }
     #column-left {
-        min-width: 70px;
+        min-width: 40px;
         max-width: 10%;
         margin-right: 10px;
     }
@@ -141,7 +141,7 @@ def demo():
         flex-grow: 1;
     }
     @media (max-width: 800px) {
-        #column-left { min-width: 70px; }
+        #column-left { min-width: 40px; }
         #column-right { min-width: 200px; }
     }
     """