diff --git a/index.html b/index.html
index 54134fd..050ee1d 100644
--- a/index.html
+++ b/index.html
@@ -88,6 +88,7 @@
         display: flex;
         flex-wrap: wrap;
         padding: 0 20px;
+        justify-content: center;
     }
 
     ul.buttons li {