add choices of image resolution

app.py

@@ -99,18 +99,23 @@ iface = gr.Interface(
             value="English"
         ),
         gr.Slider(
-            label="number of diffusion steps",
+            label="Number of diffusion steps",
             minimum=2,
             maximum=50,
             step=1,
             value=50, 
         ),
-        gr.Slider(
-            label="scaling factor for image reduction",
-            minimum=0.25,
-            maximum=1.0,
-            step=0.05,
-            value=1.0, 
+        # gr.Slider(
+        #     label="scaling factor for image reduction",
+        #     minimum=0.25,
+        #     maximum=1.0,
+        #     step=0.05,
+        #     value=1.0, 
+        # )
+        gr.Dropdown(
+            label="Image resolution",
+            choices=["192x336 & 256x256", "384x672 & 512x512", "576x1008 & 768x768", "768x1344 & 1024x1024"],
+            value="768x1344 & 1024x1024"
         )
     ],
     outputs=gr.File(