diff --git a/README.md b/README.md
index 1af5f05..eff3f88 100644
--- a/README.md
+++ b/README.md
@@ -83,16 +83,17 @@ Contributions are especially welcome in:
 ## Star History
 
 <a href="https://star-history.com/#oug-t/difi&Date">
- <picture>
-   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=oug-t/difi&type=Date&theme=dark" />
-   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=oug-t/difi&type=Date" />
-   <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=oug-t/difi&type=Date" />
- </picture>
-</a>
+    <picture>
+      <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=oug-t/difi&type=Date&theme=dark" />
+      <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=oug-t/difi&type=Date" />
+      <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=oug-t/difi&type=Date" />
+    </picture>
+  </a>
+</div>
 <p align="right">(<a href="#readme-top">back to top</a>)</p>
-
 ---
 
 <p align="center"> Made with ❤️ by <a href="https://github.com/oug-t">oug-t</a> </p>
 
 
+