add pay button

assets/pages/index.html

@@ -42,7 +42,7 @@
     </div>
     <div id="payment">
         <h2>Payment</h2>
-        <input id="amount-input" placeholder="Amount">
+        <input id="token-input" placeholder="Token">
         <br>
         <button>Pay</button>
     </div>
@@ -50,8 +50,10 @@
 
 <script>
 
-    let btn = document.getElementById("connect-button");
-    btn.addEventListener("click", async () => {
+    let btnConnect = document.getElementById("connect-button");
+    let btnPay = document.getElementById("connect-button");
+
+    btnConnect.addEventListener("click", async () => {
         let username = document.getElementById("username-field").value;
         let pwd = document.getElementById("password-field").value;