diff --git a/webroot/rsrc/css/phui/calendar/phui-calendar-month.css b/webroot/rsrc/css/phui/calendar/phui-calendar-month.css
--- a/webroot/rsrc/css/phui/calendar/phui-calendar-month.css
+++ b/webroot/rsrc/css/phui/calendar/phui-calendar-month.css
@@ -32,18 +32,21 @@
   display: inline;
 }
 
+table {
+  height: 100%;
+}
+
 table.phui-calendar-view td {
   border: solid #dfdfdf;
   border-width: 1px 1px 0 1px;
   width: 14.2857%; /* This is one seventh, approximately. */
-}
-
-.phui-calendar-month-cell-div {
-  position: relative;
+  display: table-cell;
 }
 
 .phui-calendar-month-event-list .phui-calendar-month-cell-div {
   min-height: 125px;
+  height: 100%;
+  display: block;
 }
 
 .device .phui-calendar-month-event-list .phui-calendar-month-cell-div {