span.SPAN_kalenderday
{
   background-color: #CCCCCC;
   padding-left: 0.3em;
   padding-right: 0.3em;
}
p.P_kalenderDifferentDay
{
   font-weight: bold;
}

span.SPAN_kalenderUhrzeit
{
   font-weight: bold;
   padding-right: 1em;
}