diff --git a/api/core/model_runtime/model_providers/__base/large_language_model.py b/api/core/model_runtime/model_providers/__base/large_language_model.py
index 780a55681a..b45b2ca025 100644
--- a/api/core/model_runtime/model_providers/__base/large_language_model.py
+++ b/api/core/model_runtime/model_providers/__base/large_language_model.py
@@ -31,7 +31,7 @@ from core.model_runtime.model_providers.__base.ai_model import AIModel
 logger = logging.getLogger(__name__)
 
 HTML_THINKING_TAG = (
-    '<details style="color:gray;background-color: #f5f5f5;padding: 8px;border-radius: 4px;" open> '
+    '<details style="color:gray;background-color: #f8f8f8;padding: 8px;border-radius: 4px;" open> '
     "<summary> Thinking... </summary>"
 )
 
diff --git a/web/app/styles/markdown.scss b/web/app/styles/markdown.scss
index 214d8d2782..92331505ec 100644
--- a/web/app/styles/markdown.scss
+++ b/web/app/styles/markdown.scss
@@ -47,7 +47,7 @@
 .markdown-body {
   -ms-text-size-adjust: 100%;
   -webkit-text-size-adjust: 100%;
-  margin: 0;
+  margin: 4px 0 0 0;
   color: #101828;
   background-color: var(--color-canvas-default);
   font-size: 14px;