<html>
 <head>
 <style>
-table, tr, th, td { border: 1px solid black; }
+table, tr, th, td { border: 1px solid black; text-align: center; }
 .day_row:nth-child(7n+2) { background-color: yellow; }
 .district_name { writing-mode: vertical-rl; transform: rotate(180deg); }
+.bonus_data th { font-weight: normal; }
+.new_infections { font-weight: bold; }
 </style>
 <title>Berlin's Corona infection numbers, development by districts</title>
 </head>
             if 'week_incidence' in district_data:
                 week_inc = '%.1f' % district_data['week_incidence']
             print('<td>')
-            print(new_infections)
+            print('<span class="new_infections">%s</span>' % new_infections)
             if district != sum_district:
                 print('<details><summary></summary>')
-            print('<table>')
+            print('<table class="bonus_data">')
             print('<tr><th>%s</th><td>%s</td></tr>' % (long_wsum, week_sum))
             print('<tr><th>%s</th><td>%s</td></tr>' % (long_wavg, week_avg))
             print('<tr><th>%s</th><td>%s</td></tr>' % (long_winc, week_inc))