try

app.py

@@ -56,11 +56,11 @@ examples = [
             ['./images/ydt_2.jpg', './images/ydt_1.jpg', './images/ydt_3.jpg'],
            ]
 
-css = ".output-image, .input-image, .image-preview {height: 600px !important}"
+css = ".output-image, .input-image, .image-preview {height: 300px !important}"
 demo_mask = gr.Interface(fn=inference_mask1, 
                    inputs=[gr.ImageMask(label="prompt (提示图)"), gr.Image(label="img1 (测试图1)"), gr.Image(label="img2 (测试图2)")], 
                     #outputs=[gr.Image(shape=(448, 448), label="output1 (输出图1)"), gr.Image(shape=(448, 448), label="output2 (输出图2)")],
-                    outputs=[gr.Image(label="output1 (输出图1)"), gr.Image(label="output2 (输出图2)")],
+                    outputs=[gr.Image(label="output1 (输出图1)").style(height=400, width=400), gr.Image(label="output2 (输出图2)").style(height=400, width=400)],
                     #outputs=gr.Gallery(label="outputs (输出图)"),
                     examples=examples,
                     #title="SegGPT for Any Segmentation<br>(Painter Inside)",
@@ -72,7 +72,7 @@ demo_mask = gr.Interface(fn=inference_mask1,
 </p>",
                    cache_examples=False,
                    allow_flagging="never",
-                    css=css,
+                   css=css,
                    )