add additional parent of gr.Row() to upload and download file buttons

app.py

@@ -159,8 +159,10 @@ with gr.Blocks(css=css) as demo:
                 with gr.Column(scale=4):
                     question = gr.Textbox(label="Question")
                 with gr.Column(scale=1):
-                    u = gr.UploadButton("Upload a file", file_count="single")
-                    d = gr.DownloadButton("Download the file", visible=False)
+                    with gr.Row():
+                        u = gr.UploadButton("Upload a file", file_count="single")
+                    with gr.Row():
+                        d = gr.DownloadButton("Download the file", visible=False)
             with gr.Row():
                 with gr.Column(scale=1):
                     document = gr.Textbox(label="Document")