diff --git a/billard/templatetags/display_client.py b/billard/templatetags/display_client.py
index fe6157a..90a9db4 100644
--- a/billard/templatetags/display_client.py
+++ b/billard/templatetags/display_client.py
@@ -32,7 +32,7 @@ def display_client(client, desk_no):
             prize = '{0:.2f}'.format(prize)
             if prize != a.prize:
                 a.prize = prize
-    html = '<div class="col col-md-6">\n'
+    html = '<div class="col col-12 col-lg-6">\n'
     html += '    <div class="table-info alert {}">\n'.format(alert)
     html += '        <h4 style="text-align: center">({}) {}</h4>\n'.format(desk_no, desk.name)
     if loc.happy_hour_start is not None and desk.prize_hh is not None: