.calendar-container {
  background: #fff;
  width: 450px;
  border-radius: 10px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.calendar-container header {
  display: flex;
  align-items: center;
  padding: 25px 30px 10px;
  justify-content: space-between;
}

header .calendar-navigation {
  display: flex;
}

header .calendar-navigation span {
  height: 38px;
  width: 38px;
  margin: 0 1px;
  cursor: pointer;
  text-align: center;
  line-height: 38px;
  border-radius: 50%;
  user-select: none;
  color: #aeabab;
  font-size: 1.9rem;
}

.calendar-navigation span:last-child {
  margin-right: -10px;
}

header .calendar-navigation span:hover {
  background: #f2f2f2;
}

header .calendar-current-date {
  font-weight: 500;
  font-size: 1.45rem;
}

.calendar-body {
  padding: 20px;
}

.calendar-body ul {
  list-style: none;
  flex-wrap: wrap;
  display: flex;
  text-align: center;
}

.calendar-body .calendar-dates {
  margin-bottom: 20px;
}

.calendar-body li {
  width: calc(100% / 7);
  font-size: 1.07rem;
  color: #414141;
}

.calendar-body .calendar-weekdays li {
  cursor: default;
  font-weight: 500;
}

.calendar-body .calendar-dates li {
  margin-top: 30px;
  position: relative;
  z-index: 1;
  cursor: pointer;
}

.calendar-dates li.inactive {
  color: #aaa;
}

.calendar-dates li.active {
  color: #fff;
}

.calendar-dates li::before {
  position: absolute;
  content: "";
  z-index: -1;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.calendar-dates li.active::before {
  background: #c62222;
}

.calendar-dates li:not(.active):hover::before {
  background: #e4e1e1;
}

#calendar-prev {
  width: 50px;
  height: 50px;
}

#calendar-next {
  width: 50px;
  height: 50px;
}