Update app.py

app.py

@@ -213,11 +213,13 @@ def build_demo(embed_mode, concurrency_count=1):
 
         with gr.Row():
             with gr.Column(scale=3):
-                imagebox = gr.Image(type="numpy", label="Input Screenshot", placeholder="""#Try ShowUI with screenshots!
+                imagebox = gr.Image(type="numpy", label="Input Screenshot", placeholder="""##Try ShowUI with screenshots!
+
+                
+                For Windows: **Win + Shift + S**
+                For macOS: **Command + Shift + 3**
                 
-                For Windows: Win + Shift + S,
-                For macOS: Command + Shift + 3,
-                Then upload / paste from clipboard 🤗
+                Then upload/paste from clipboard 🤗
                 """)
                 textbox = gr.Textbox(
                     show_label=True,