update UI

app.py

@@ -200,9 +200,6 @@ css = """
     font-size: 14px;
     font-weight: normal;
 }
-.gr-block label, .gr-form label, .gr-box label {
-    display: none !important;
-}
 """
 
 def reset_enhance():
@@ -225,7 +222,7 @@ with gr.Blocks(title="消化道疾病智能分析系统") as demo:
             with gr.Group(elem_classes="blue-dash-border"):
                 with gr.Group(elem_classes="big-group"):
                     gr.HTML("<div class='big-title'>图像增强模块</div>")
-                    enhance_select = gr.Dropdown(choices=ENHANCE_CHOICES, value="请选择样例图片或者上传", label=None, filterable=True)
+                    enhance_select = gr.Dropdown(choices=ENHANCE_CHOICES, value="---------------", label="请选择样例图片或者上传", filterable=True)
                     with gr.Row():
                         with gr.Column():
                             enhance_input_img = gr.Image(show_label=False, interactive=False, width=300, height=300)
@@ -246,7 +243,7 @@ with gr.Blocks(title="消化道疾病智能分析系统") as demo:
             with gr.Group(elem_classes="blue-dash-border"):
                 with gr.Group(elem_classes="big-group"):
                     gr.HTML("<div class='big-title'>图像分割模块</div>")
-                    seg_select = gr.Dropdown(choices=SEG_CHOICES, value="请选择样例图片或者上传", label=None, filterable=True)
+                    seg_select = gr.Dropdown(choices=SEG_CHOICES, value="---------------", label="请选择样例图片或者上传", filterable=True)
                     with gr.Row():
                         with gr.Column():
                             seg_input_img = gr.Image(show_label=False, interactive=False, width=300, height=300)
@@ -269,7 +266,7 @@ with gr.Blocks(title="消化道疾病智能分析系统") as demo:
                 with gr.Row():
                     # 左列：输入图片+按钮
                     with gr.Column():
-                        diag_select = gr.Dropdown(choices=DIAG_CHOICES, value="请选择样例图片或者上传", label=None, filterable=True)
+                        diag_select = gr.Dropdown(choices=DIAG_CHOICES, value="---------------", label="请选择样例图片或者上传", filterable=True)
                         with gr.Column():
                             diag_input_img = gr.Image(show_label=False, interactive=False, width=300, height=300)
                             gr.HTML("<div class='img-label-bar'>输入图片</div>")