diff --git a/index.html b/index.html
index b75f05a..ab236a7 100644
--- a/index.html
+++ b/index.html
@@ -264,7 +264,7 @@
                 </div>
                 <span property="eventAttendanceMode" content="https://schema.org/OfflineEventAttendanceMode"></span>
                 <span property="eventStatus" content="https://schema.org/EventScheduled"></span>
-                <p property="offer" vocab="https://schema.org/" typeof="Offer">
+                <p property="offer" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">use school bows &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="30"></span>
@@ -272,7 +272,7 @@
                     <span property="validFrom" content="2021-09-02T09:00:00+01:00"></span>
                     <span property="availability" content="https://schema.org/InStock"></span>
                 </p>
-                <p property="offers" vocab="https://schema.org/" typeof="Offer">
+                <p property="offers" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">bring your own bow &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="20"></span>
@@ -341,7 +341,7 @@
                 </div>
                 <span property="eventAttendanceMode" content="https://schema.org/OfflineEventAttendanceMode"></span>
                 <span property="eventStatus" content="https://schema.org/EventScheduled"></span>
-                <p property="offer" vocab="https://schema.org/" typeof="Offer" hidden="hidden">
+                <p property="offer" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">use school bows &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="30"></span>
@@ -349,7 +349,7 @@
                     <span property="validFrom" content="2021-09-02T09:00:00+01:00"></span>
                     <span property="availability" content="https://schema.org/InStock"></span>
                 </p>
-                <p property="offers" vocab="https://schema.org/" typeof="Offer">
+                <p property="offers" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">bring your own bow &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="20"></span>
@@ -417,7 +417,7 @@
                 </div>
                 <span property="eventAttendanceMode" content="https://schema.org/OfflineEventAttendanceMode"></span>
                 <span property="eventStatus" content="https://schema.org/EventScheduled"></span>
-                <p property="offer" vocab="https://schema.org/" typeof="Offer" hidden="hidden">
+                <p property="offer" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">use school bows &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="30"></span>
@@ -425,7 +425,7 @@
                     <span property="validFrom" content="2021-09-02T09:00:00+01:00"></span>
                     <span property="availability" content="https://schema.org/InStock"></span>
                 </p>
-                <p property="offers" vocab="https://schema.org/" typeof="Offer">
+                <p property="offers" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">bring your own bow &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="20"></span>
@@ -494,7 +494,7 @@
                 </div>
                 <span property="eventAttendanceMode" content="https://schema.org/OfflineEventAttendanceMode"></span>
                 <span property="eventStatus" content="https://schema.org/EventScheduled"></span>
-                <p property="offer" vocab="https://schema.org/" typeof="Offer" hidden="hidden">
+                <p property="offer" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">use school bows &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="30"></span>
@@ -502,7 +502,7 @@
                     <span property="validFrom" content="2021-09-02T09:00:00+01:00"></span>
                     <span property="availability" content="https://schema.org/InStock"></span>
                 </p>
-                <p property="offers" vocab="https://schema.org/" typeof="Offer">
+                <p property="offers" vocab="https://schema.org/" typeof="Offer" class="offer">
                     Tickets to <span property="name">bring your own bow &amp; arrows</span>:
                     <a property="url" href="https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405">https://www.eventbrite.co.uk/e/pa-kua-chinese-archery-tickets-169252373405</a>
                     <span property="price" content="20"></span>