Fix accidental use of relative units

Author: danielchalmers

JournalApp/Pages/Calendar/CalendarMonth.razor.css

@@ -8,7 +8,7 @@
 ::deep .calendar-month-grid {
   display: flex;
   flex-direction: column;
-  padding: 0.75em;
+  padding: 12px;
 }
 
 ::deep .calendar-day-cell {

JournalApp/wwwroot/app.css

@@ -120,14 +120,14 @@ body {
 }
 
 .mud-dialog {
-  padding: 0.75em !important;
-  gap: 0.75em !important;
+  padding: 12px !important;
+  gap: 12px !important;
   border-radius: 28px;
 }
 
 .mud-card {
-  padding: 0.75em !important;
-  gap: 0.75em !important;
+  padding: 12px !important;
+  gap: 12px !important;
   border-radius: 12px;
 }