diff --git a/ietf/meeting/tests_views.py b/ietf/meeting/tests_views.py
index eb7a61b1b..5bf237d9d 100644
--- a/ietf/meeting/tests_views.py
+++ b/ietf/meeting/tests_views.py
@@ -2736,7 +2736,7 @@ class SessionDetailsTests(TestCase):
         self.assertNotContains(r, 'deleted')
 
         q = PyQuery(r.content)
-        self.assertTrue(q('h2#session_%s span#session-buttons-%s' % (session.id, session.id)), 
+        self.assertTrue(q('h2#session_%s div#session-buttons-%s' % (session.id, session.id)),
                                'Session detail page does not contain session tool buttons') 
         self.assertFalse(q('h2#session_%s div#session-buttons-%s span.fa-arrows-alt' % (session.id, session.id)), 
                          'The session detail page is incorrectly showing the "Show meeting materials" button')
@@ -6205,4 +6205,4 @@ class ProceedingsTests(BaseMeetingTestCase):
         )
         pm = meeting.proceedings_materials.get(pk=pm.pk)
         self.assertEqual(str(pm), 'This Is Not the Default Name')
-        self.assertEqual(pm.document.rev, orig_rev, 'Renaming should not change document revision')
+        self.assertEqual(pm.document.rev, orig_rev, 'Renaming should not change document revision')
\ No newline at end of file
diff --git a/ietf/static/ietf/js/agenda/agenda_timezone.js b/ietf/static/ietf/js/agenda/agenda_timezone.js
index 1d05a65d2..309876617 100644
--- a/ietf/static/ietf/js/agenda/agenda_timezone.js
+++ b/ietf/static/ietf/js/agenda/agenda_timezone.js
@@ -127,9 +127,9 @@ function format_tooltip_table(start, end) {
 
 // Format tooltip for item
 function format_tooltip(start, end) {
-    return '<span class="timetooltiptext">' +
+    return '<div class="timetooltiptext">' +
         format_tooltip_table(start, end) +
-        '</span>';
+        '</div>';
 }
 
 // Add tooltips
diff --git a/ietf/templates/meeting/agenda.html b/ietf/templates/meeting/agenda.html
index 363082e21..6adc80427 100644
--- a/ietf/templates/meeting/agenda.html
+++ b/ietf/templates/meeting/agenda.html
@@ -127,7 +127,7 @@
           {% endif %}
         </h2>
 
-        <iframe seamless class="hidden" id="weekview"></iframe>
+        <iframe class="hidden" id="weekview"></iframe>
 
         <table class="table table-condensed table-striped">
           {% for item in filtered_assignments %}
@@ -150,14 +150,14 @@
                     data-slot-end-ts="{{item.end_timestamp}}">
                   <td class="leftmarker"></td>
 	          <th class="text-nowrap text-right">
-                    <span class="hidden-xs">
+                    <div class="hidden-xs">
                        {% include "meeting/timeslot_start_end.html" %}
-                    </span>
+                    </div>
 	          </th>
 	          <th colspan="4">
-                    <span class="hidden-sm hidden-md hidden-lg">
+                    <div class="hidden-sm hidden-md hidden-lg">
                        {% include "meeting/timeslot_start_end.html" %}
-                    </span>
+                    </div>
 	            {{ item.timeslot.time|date:"l"}}
 	            {{item.timeslot.name|capfirst_allcaps}}
 	          </th>
@@ -172,14 +172,14 @@
                     data-slot-end-ts="{{item.end_timestamp}}">
                   <td class="leftmarker"></td>
 	          <td class="text-nowrap text-right">
-                    <span class="hidden-xs">
+                    <div class="hidden-xs">
                        {% include "meeting/timeslot_start_end.html" %}
-                    </span>
+                    </div>
 	          </td>
                   <td colspan="3">
-                    <span class="hidden-sm hidden-md hidden-lg">
+                    <div class="hidden-sm hidden-md hidden-lg">
                        {% include "meeting/timeslot_start_end.html" %}
-                    </span>
+                    </div>
                     {% if item.timeslot.show_location and item.timeslot.get_html_location %}
 		      {% if schedule.meeting.number|add:"0" < 96 %}
                       {% comment %}<a href="https://tools.ietf.org/agenda/{{schedule.meeting.number}}/venue/?room={{ item.timeslot.get_html_location|xslugify }}">{% endcomment %}
@@ -193,10 +193,10 @@
 		      {% endif %}
 		      {% with item.timeslot.location.floorplan as floor %}
 		      {% if item.timeslot.location.floorplan %}
-                      <span class="hidden-xs">
+                      <div class="hidden-xs">
 			<a href="{% url 'ietf.meeting.views.floor_plan' num=schedule.meeting.number %}#{{floor.name|xslugify}}"
 			  class="pull-right" title="{{floor.name}}"><span class="label label-blank label-wide">{{floor.short}}</span></a>
-                      </span>
+                      </divn>
 		      {% endif %}
 		      {% endwith %}
 	            {% endif %}
@@ -241,14 +241,14 @@
                   <td class="leftmarker"></td>
 		  {% if item.timeslot.type.slug == 'plenary' %}
 	            <th class="text-nowrap text-right">
-                      <span class="hidden-xs">
+                      <div class="hidden-xs">
                          {% include "meeting/timeslot_start_end.html" %}
-                      </span>
+                      </div>
 		    </th>
 		    <td colspan="3">
-                      <span class="hidden-sm hidden-md hidden-lg">
+                      <div class="hidden-sm hidden-md hidden-lg">
                          {% include "meeting/timeslot_start_end.html" %}
-                      </span>
+                      </div>
 		      {% if item.timeslot.show_location and item.timeslot.get_html_location %}
 			{% if schedule.meeting.number|add:"0" < 96 %}
 			{% comment %}<a href="https://tools.ietf.org/agenda/{{schedule.meeting.number}}/venue/?room={{ item.timeslot.get_html_location|xslugify }}">{% endcomment %}
@@ -266,10 +266,10 @@
 		    <td>
 		      {% with item.timeslot.location.floorplan as floor %}
 		      {% if item.timeslot.location.floorplan %}
-                      <span class="hidden-xs">
+                      <div class="hidden-xs">
 			<a href="{% url 'ietf.meeting.views.floor_plan' num=schedule.meeting.number %}#{{floor.name|xslugify}}"
 			  class="pull-right" title="{{floor.name}}"><span class="label label-blank">{{floor.short}}</span></a>
-                      </span>
+                      </div>
 		      {% endif %}
 		      {% endwith %}
 		    </td>
@@ -287,7 +287,7 @@
                       {% endif %}
                     </td>
 
-		      <td><span class="hidden-xs">{{item.session.historic_group.historic_parent.acronym}}</span></td>
+		      <td><div class="hidden-xs">{{item.session.historic_group.historic_parent.acronym}}</div></td>
 
                     <td>
                       {% if item.session.historic_group %}
@@ -324,19 +324,19 @@
                     {% endif %}
 
                     {% if item.session.current_status == 'resched' %}
-                      <span class="label label-danger pull-right">
+                      <div class="label label-danger pull-right">
                         RESCHEDULED
                         {% if item.session.rescheduled_to %}
                           TO
-                          <span class="timetooltip reschedtimetooltip"><span class="time" data-start-time="{{item.session.rescheduled_to.utc_start_time|date:"U"}}" data-end-time="{{item.session.rescheduled_to.utc_end_time|date:"U"}}" {% if item.timeslot.time|date:"l" != item.session.rescheduled_to.time|date:"l" %} weekday="1"{% endif %}>
+                          <div class="timetooltip reschedtimetooltip"><div class="time" data-start-time="{{item.session.rescheduled_to.utc_start_time|date:"U"}}" data-end-time="{{item.session.rescheduled_to.utc_end_time|date:"U"}}" {% if item.timeslot.time|date:"l" != item.session.rescheduled_to.time|date:"l" %} weekday="1"{% endif %}>
 		          {% if "-utc" in request.path %}
                             {{ item.session.rescheduled_to.utc_start_time|date:"l G:i"|upper }}-{{ item.session.rescheduled_to.utc_end_time|date:"G:i" }}
 		          {% else %}
                             {{ item.session.rescheduled_to.time|date:"l G:i"|upper }}-{{ item.session.rescheduled_to.end_time|date:"G:i" }}
 		          {% endif %}
-                          </span></span>
+                          </div></div>
                         {% endif %}
-                      </span>
+                      </div>
                     {% endif %}
 
                     {% if item.session.agenda_note|first_url|conference_url %}
@@ -533,4 +533,4 @@
     }
   );
   </script>
-{% endblock %}
+{% endblock %}
\ No newline at end of file
diff --git a/ietf/templates/meeting/session_buttons_include.html b/ietf/templates/meeting/session_buttons_include.html
index 90a7205f8..4d3533a3b 100644
--- a/ietf/templates/meeting/session_buttons_include.html
+++ b/ietf/templates/meeting/session_buttons_include.html
@@ -5,7 +5,7 @@
 {% origin %}
 
 {% with slug=item.slug %}{% with session=item.session %}{% with timeslot=item.timeslot %}{% with meeting=schedule.meeting %}
-<span id="session-buttons-{{session.pk}}" class="text-nowrap">
+<div id="session-buttons-{{session.pk}}" class="text-nowrap">
   {% with acronym=session.historic_group.acronym %}
   {% if session.agenda and show_agenda %}
     {# Note: if called with show_agenda=True, calling template must load agenda_materials.js, needed by session_agenda_include.html #}
@@ -110,5 +110,5 @@
     {% endif %}
   {% endif %}
   {% endwith %}
-</span>
+</div>
 {% endwith %}{% endwith %}{% endwith %}{% endwith %}
\ No newline at end of file
diff --git a/ietf/templates/meeting/timeslot_start_end.html b/ietf/templates/meeting/timeslot_start_end.html
index 30f9973ce..8c5e114f9 100644
--- a/ietf/templates/meeting/timeslot_start_end.html
+++ b/ietf/templates/meeting/timeslot_start_end.html
@@ -1,7 +1,7 @@
-                    <span class="timetooltip"><span class="time" data-start-time="{{item.start_timestamp}}" data-end-time="{{item.end_timestamp}}">
+                    <div class="timetooltip"><div class="time" data-start-time="{{item.start_timestamp}}" data-end-time="{{item.end_timestamp}}">
 	            {% if "-utc" in request.path %}
 	              {{item.timeslot.utc_start_time|date:"H:i"}}-{{item.timeslot.utc_end_time|date:"H:i"}}
 	            {% else %}
 	              {{item.timeslot.time|date:"H:i"}}-{{item.timeslot.end_time|date:"H:i"}}
 	            {% endif %}
-                    </span></span>
+                    </div></div>
\ No newline at end of file