fix(web): Center QR code image

web/css/style.css

@@ -1470,6 +1470,8 @@ ul { list-style: none; }
   width: 200px;
   height: auto;
   border-radius: var(--radius-md);
+  display: block;
+  margin: 0 auto;
 }
 .contact-qr span {
   display: block;