join page

ui/public/pages/join.html

@@ -53,6 +53,10 @@
     <span id="title" onclick='window.location.href="/"'>hyperia
     </span>
 
+    <p style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%)">
+      Hyperia is invite-only. You'll need a friend to invite you.
+    </p>
+
     <script>
         Array.from($("a*")).forEach((link) => {
           link.addEventListener("click", () => window.history.pushState("", "", link.innerHTML.toLowerCase()))