body {
  font-family: sans-serif;
  font-size: 12px;
}
table.calendar {
  border-collapse: collapse;
  width: 200px;
  margin-bottom: 10px;
}
table.calendar th, table.calendar td {
  border: 1px solid #ccc;
  width: 14.28%;
  height: 22px;
  text-align: center;
  vertical-align: middle;
  padding: 0;
}
.holiday {
  background-color: #f8d7da;
  border-radius: 50%;
  display: inline-block;
  width: 18px;
  height: 18px;
  line-height: 18px;
}
.navigation {
  margin-bottom: 10px;
}