fix(move upload button from right side to below document textbox)

app.py

@@ -253,12 +253,12 @@ with gr.Blocks(css=css, theme=gr.themes.Default(spacing_size="sm", font=[gr.them
                 question = gr.Textbox(label="Question")
             with gr.Row():
                 document = gr.Textbox(label="Document", scale=4)
+            with gr.Row():
                 u = gr.UploadButton("Upload", visible=True, file_count="single", file_types=UPLOADABLE_FILE_TYPES, scale=1, elem_classes="fixed-height-button")
                 file_group = gr.Group(elem_classes="fixed-height-button", visible=False)
                 with file_group:
                     file_name = gr.Markdown("")
                     c = gr.ClearButton([u, file_name])
-                    # d = gr.DownloadButton("Download the file", visible=False, scale=1)
             with gr.Row():
                 answer = gr.Textbox(label="Answer")
             with gr.Row():