diff --git a/mineru/resources/gradio_header.html b/mineru/resources/gradio_header.html
index 50d3a0da..a83846f3 100644
--- a/mineru/resources/gradio_header.html
+++ b/mineru/resources/gradio_header.html
@@ -93,9 +93,9 @@
     transform: translate(-50%, 0);
     visibility: visible;
   }
-  .mineru-header-popover-link {
+  .mineru-demo-header .mineru-header-popover-link {
     display: block;
-    padding: 10px 12px;
+    padding: 10px 12px !important;
     border-radius: 6px;
     color: rgba(255, 255, 255, 0.92) !important;
     font-size: 14px;