Update app.py

app.py

@@ -5,6 +5,18 @@ from nomad_data import country_emoji_map, data, terrain_emoji_map
 
 df = pd.DataFrame(data)
 
+js_func = """
+function refresh() {
+    const url = new URL(window.location);
+
+    if (url.searchParams.get('__theme') !== 'dark') {
+        url.searchParams.set('__theme', 'dark');
+        window.location.href = url.href;
+    }
+}
+"""
+
+
 def style_quality_of_life(val):
     """Style the Quality of Life column with color gradient from red to green"""
     if pd.isna(val):
@@ -397,4 +409,4 @@ with gr.Blocks(css="""
             
             cost_slider.change(recommend_location, inputs=[priority, cost_slider], outputs=recommendation)
             
-demo.launch()
+demo.launch(js=js_func)