diff --git a/README.md b/README.md
index f249c44..3aedfc5 100644
--- a/README.md
+++ b/README.md
@@ -24,9 +24,9 @@
 
 </div>
 
-<div align="center">
+<div style="width: 100%; max-width: 600px; margin: 0 auto;">
   <a href="https://github.com/lintsinghua/XCodeReviewer">
-    <img src="public/star-me-cn.svg" alt="Star this project" />
+    <img src="public/star-me-cn.svg" alt="Star this project" style="width: 100%; height: auto; display: block; margin: 0 auto;" />
   </a>
 </div>
 
diff --git a/README_EN.md b/README_EN.md
index b1528ce..fc5bb9e 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -24,9 +24,9 @@
 
 </div>
 
-<div align="center">
+<div style="width: 100%; max-width: 600px; margin: 0 auto;">
   <a href="https://github.com/lintsinghua/XCodeReviewer">
-    <img src="public/star-me.svg" alt="Star this project" />
+    <img src="public/star-me.svg" alt="Star this project" style="width: 100%; height: auto; display: block; margin: 0 auto;" />
   </a>
 </div>