.calendar-box {
  text-align: center;
  padding: 20px;
  border: 1px solid #ccc;
  border-radius: 10px;
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  width: 300px;
}

.calendar-title {
  font-size: 18px;
  margin-bottom: 10px;
  color: #333;
}

.calendar {
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  width: 300px;
  position: absolute;
  z-index: 1;
  display: none;
}

.header {
  background-color: #3498db;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}

#prevBtn,
#nextBtn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 16px;
}

#monthYear {
  font-size: 18px;
  font-weight: bold;
}

.days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  padding: 10px;
}

.day {
  padding: 10px;
  text-align: center;
  border-radius: 5px;
  cursor: pointer;
}

.day.current {
  background-color: #3498db;
  color: white;
}
.day.past {
  color: lightgrey;
}
.day.selected {
  background-color: #2ecc71;
  color: white;
}

#DATE_BOOK {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 14px;
  outline: none;
  cursor: pointer;
}