.calendar {
  background: #ECEEAF;
  border: 1px solid #F7F6F2;
  border-collapse: collapse;
  font-family: 'PT Mono', monospace;
  text-align: center;
  width: 100%;
}
.calendar thead tr:first-child {
  background: #81BA00;
  border: 1px solid;
  color: #F7F6F2;
}
.calendar thead tr:first-child td {
  padding: 0.5em 0;
}
.calendar thead tr:last-child {
  background: #81BA00;
  border-bottom: 1px solid #F7F6F2;
  color: #F7F6F2;
  font-size: 0.9em;
}
.calendar thead tr:nth-child(1) td:nth-child(1):hover,
.calendar thead tr:nth-child(1) td:nth-child(3):hover {
  cursor: pointer;
}
.calendar tbody td:nth-child(n+6),
.calendar .holiday {
  color: #3366CC;
}
.calendar thead tr:last-child td,
.calendar tbody td {
  border: 1px solid #F7F6F2;
  padding: 5px;
}
.calendar tbody td.today {
  background: #3366CC;
  color: #F7F6F2;
}