Use Radio instead of Dropdown

app.py

@@ -496,7 +496,7 @@ with gr.Blocks(css=custom_css, css_paths="style.css", theme=gr.themes.Glass()) a
             )
     gr.HTML(BOTTOM_LOGO)
 
-    language = gr.Dropdown(
+    language = gr.Radio(
         choices=["🇯🇵 JP", "🇺🇸 EN"],
         value="🇯🇵 JP",
         elem_classes="language-selector",

style.css

@@ -1,5 +1,8 @@
 .language-selector {
     width: auto;
+    display: flex;
+    justify-content: center;
+    margin: 20px 0;
 }
 
 /* Hides the final AutoEvalColumn */