.calendar__header {
  position: relative;
}
.calendar__header div {
  text-align: center;
  line-height: 50px;
  font-weight: bold;
  font-size: 24px;
}
.calendar__header button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    border: none;
    background: transparent;
    font-size: 20px;
    font-weight: 600;
    color: #3c65f5;
}
.calendar__header button.prev {
  left: 0;
}
.calendar__header button.next {
  right: 0;
}
.calendar__item {
  display: inline-block;
  width: 14.2857142857%;
  padding: 5px;
  text-align: center;
  box-sizing: border-box;
  font-weight: bold;
  vertical-align: top;
}
.calendar__item .calendar__day {
  position: relative;
  border-radius: 50%;
  cursor: pointer;
}
.calendar__item .calendar__day:before {
  content: "";
  display: block;
  padding-top: 100%;
}
.calendar__item .calendar__day.today {

}
.calendar__item .calendar__day.clicked {
  background-color: #e9e9e9;
  color: black;
}
.calendar__item .calendar__day.disabled {
  color: #d9d9d9;
  cursor: default;
}
.calendar__item .calendar__day span {
  position: absolute;
  top: 50%;
  left: 0;
  display: block;
  width: 100%;
  transform: translateY(-50%);
}