Update css

app.py

@@ -91,14 +91,14 @@ If you find ID-Booth helpful, please consider citing our paper:
 """
 
 css = '''
-.gradio-container {
+#main-container {
     width: 60%;
     margin: auto;
 }
 
 /* For smaller screens */
 @media screen and (max-width: 768px) {
-    .gradio-container {
+    #main-container {
         width: 85% !important;
     }
 }
@@ -109,7 +109,7 @@ with gr.Blocks(css=css) as demo:
     # description
     gr.Markdown(header)
     gr.Markdown(description)
-    with gr.Column(elem_id="col-container"):
+    with gr.Column(elem_id="main-container"):
         # with gr.Row():
         #     gr.Markdown("### Choose an identity, background, and pose:")