Update app.py

app.py

@@ -536,47 +536,50 @@ with gr.Blocks(title=TITLE) as demo:
                 "Add rows where **Original Tag** will be replaced by **Substitute Tag** "
                 "in the final combined output (after all frames are processed)."
             )
-        
-            with gr.Row():
+    
+            # Dataframe with button *below* it
+            with gr.Column():
                 tag_substitutes_df = gr.Dataframe(
                     headers=["Original Tag", "Substitute Tag"],
                     datatype=["str", "str"],
-                    row_count=1,          
+                    row_count=1,
                     column_count=2,
                     type="array",
                     label="Tag Substitutes",
                     interactive=True,
                 )
-                    add_sub_row_btn = gr.Button("➕ Add substitute", scale=0)
-        
+                add_sub_row_btn = gr.Button("➕ Add substitute")
+    
             gr.Markdown("### Tag Exclusions")
             gr.Markdown(
                 "Add tags that should be **removed entirely** from the final combined output."
             )
-        
-            with gr.Row():
+    
+            # Dataframe with button *below* it
+            with gr.Column():
                 tag_exclusions_df = gr.Dataframe(
                     headers=["Tag to Exclude"],
                     datatype=["str"],
-                    row_count=1,         
+                    row_count=1,
                     column_count=1,
                     type="array",
                     label="Tag Exclusions",
                     interactive=True,
                 )
-                    add_ex_row_btn = gr.Button("➕ Add exclusion", scale=0)
+                add_ex_row_btn = gr.Button("➕ Add exclusion")
 
-                add_sub_row_btn.click(
-                    fn=add_substitute_row,
-                    inputs=tag_substitutes_df,
-                    outputs=tag_substitutes_df,
-                )
+
+    add_sub_row_btn.click(
+        fn=add_substitute_row,
+        inputs=tag_substitutes_df,
+        outputs=tag_substitutes_df,
+    )
             
-                add_ex_row_btn.click(
-                    fn=add_exclusion_row,
-                    inputs=tag_exclusions_df,
-                    outputs=tag_exclusions_df,
-                )
+    add_ex_row_btn.click(
+        fn=add_exclusion_row,
+        inputs=tag_exclusions_df,
+        outputs=tag_exclusions_df,
+    )
 
 
     # Wiring the button AFTER all components are defined