Update README.md

README.md

@@ -6,7 +6,9 @@
     </a>
 </p>
 
-<img style="text-align: center" src="http://36.134.138.141:5000/get?name=MarkusJoe&theme=lewd" alt="Counter">
+<div align="center">
+    <img src="http://36.134.138.141:5000/get?name=MarkusJoe&theme=lewd" alt="Counter">
+</div>
 
 ## Python 版访问次数计数器使用了flask 作为服务端接收请求
 *  [文档](https://request-counter-docs.vercel.app/#/)