src/css/calendar.css

.calendar {
  margin: 10px auto 40px auto;
  border-collapse: collapse;
}

.calendar td {
  padding: 8px;
  min-width: 75px;
}

.calendar .day {
  border: solid 1px black;
}

.calendar .day .date {
  font-weight: bold;
}

select {
  border-radius: 3px;
}

select[data-value="0"] {
  background: #FF1744;
  color: white;
}

select[data-value="1"] {
  background: #00E5FF;
  color: black;
}

select[data-value="2"] {
  background: #00E676;
  color: black;
}

select option {
  background: white;
  color: black;
}

.month {
  font-weight: light;
  font-size: 18px;
  text-align: center;
}