diff --git a/README.md b/README.md
index 126a5133340b5af5420677849e24a994fd875acb..612f8851af67d5f227248e1aa3660a22214d712b 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <div align="center">
-<a href="https://github.com/CyC2018/CS-Notes"> <img src="https://badgen.net/github/stars/CyC2018/CS-Notes?icon=github&color=4ab8a1"></a>
-<a href="other/download.md"> <img src="https://badgen.net/badge/OvO/%E7%A6%BB%E7%BA%BF%E4%B8%8B%E8%BD%BD?icon=telegram&color=4ab8a1"></a>
-<a href="https://cyc2018.github.io/CS-Notes"> <img src="https://badgen.net/badge/CyC/%E5%9C%A8%E7%BA%BF%E9%98%85%E8%AF%BB?icon=sourcegraph&color=4ab8a1"></a>
+    <a href="https://github.com/CyC2018/CS-Notes"> <img src="https://badgen.net/github/stars/CyC2018/CS-Notes?icon=github&color=4ab8a1"></a>
+    <a href="other/download.md"> <img src="https://badgen.net/badge/OvO/%E7%A6%BB%E7%BA%BF%E4%B8%8B%E8%BD%BD?icon=telegram&color=4ab8a1"></a>
+    <a href="https://cyc2018.github.io/CS-Notes"> <img src="https://badgen.net/badge/CyC/%E5%9C%A8%E7%BA%BF%E9%98%85%E8%AF%BB?icon=sourcegraph&color=4ab8a1"></a>
 </div>