diff --git a/client/index.html b/client/index.html
index 08dee41..1eb741a 100644
--- a/client/index.html
+++ b/client/index.html
@@ -19,10 +19,22 @@
     overflow-y: scroll;
     white-space: pre-wrap;
   }
+
+  a {
+    color: rgb(255, 31, 248);
+    text-decoration: none;
+    &:hover {
+      border-bottom: 1px solid rgb(255, 31, 248);
+    }
+  }
 </style>
 
 <main>
   <textarea cols="80" rows="20"></textarea>
 </main>
 
+<footer>
+  <a href="https://git.lavender.software/char/sync-playground">source code</a>
+</footer>
+
 <script type="module" src="/dist/main.js"></script>