calendar.css

.react-datepicker-popper[data-placement^='bottom'] .react-datepicker__triangle,
.react-datepicker-popper[data-placement^='top'] .react-datepicker__triangle,
.react-datepicker__year-read-view--down-arrow,
.react-datepicker__month-read-view--down-arrow,
.react-datepicker__month-year-read-view--down-arrow {
  margin-left: -8px;
  position: absolute;
}

.react-datepicker-popper[data-placement^='bottom'] .react-datepicker__triangle,
.react-datepicker-popper[data-placement^='top'] .react-datepicker__triangle,
.react-datepicker__year-read-view--down-arrow,
.react-datepicker__month-read-view--down-arrow,
.react-datepicker__month-year-read-view--down-arrow,
.react-datepicker-popper[data-placement^='bottom']
  .react-datepicker__triangle::before,
.react-datepicker-popper[data-placement^='top']
  .react-datepicker__triangle::before,
.react-datepicker__year-read-view--down-arrow::before,
.react-datepicker__month-read-view--down-arrow::before,
.react-datepicker__month-year-read-view--down-arrow::before {
  box-sizing: content-box;
  position: absolute;
  border: 8px solid transparent;
  height: 0;
  width: 1px;
}

.react-datepicker-popper[data-placement^='bottom']
  .react-datepicker__triangle::before,
.react-datepicker-popper[data-placement^='top']
  .react-datepicker__triangle::before,
.react-datepicker__year-read-view--down-arrow::before,
.react-datepicker__month-read-view--down-arrow::before,
.react-datepicker__month-year-read-view--down-arrow::before {
  content: '';
  z-index: -1;
  border-width: 8px;
  left: -8px;
  border-bottom-color: #aeaeae;
}

.react-datepicker-popper[data-placement^='bottom'] .react-datepicker__triangle {
  top: 0;
  margin-top: -8px;
}

.react-datepicker-popper[data-placement^='bottom'] .react-datepicker__triangle,
.react-datepicker-popper[data-placement^='bottom']
  .react-datepicker__triangle::before {
  border-top: none;
  border-bottom-color: #f0f0f0;
}

.react-datepicker-popper[data-placement^='bottom']
  .react-datepicker__triangle::before {
  top: -1px;
  border-bottom-color: #aeaeae;
}

.react-datepicker-popper[data-placement^='top'] .react-datepicker__triangle,
.react-datepicker__year-read-view--down-arrow,
.react-datepicker__month-read-view--down-arrow,
.react-datepicker__month-year-read-view--down-arrow {
  bottom: 0;
  margin-bottom: -8px;
}

.react-datepicker-popper[data-placement^='top'] .react-datepicker__triangle,
.react-datepicker__year-read-view--down-arrow,
.react-datepicker__month-read-view--down-arrow,
.react-datepicker__month-year-read-view--down-arrow,
.react-datepicker-popper[data-placement^='top']
  .react-datepicker__triangle::before,
.react-datepicker__year-read-view--down-arrow::before,
.react-datepicker__month-read-view--down-arrow::before,
.react-datepicker__month-year-read-view--down-arrow::before {
  border-bottom: none;
  border-top-color: #fff;
}

.react-datepicker-popper[data-placement^='top']
  .react-datepicker__triangle::before,
.react-datepicker__year-read-view--down-arrow::before,
.react-datepicker__month-read-view--down-arrow::before,
.react-datepicker__month-year-read-view--down-arrow::before {
  bottom: -1px;
  border-top-color: #aeaeae;
}

.react-datepicker-wrapper {
  display: inline-block;
  padding: 0;
  border: 0;
}

.react-datepicker {
  font-size: 0.8rem;
  background-color: #fff;
  color: #000;
  border: 1px solid #555;
  border-radius: 6px;
  display: inline-block;
  position: relative;
}

.react-datepicker--time-only .react-datepicker__triangle {
  left: 35px;
}

.react-datepicker--time-only .react-datepicker__time-container {
  border-left: 0;
}

.react-datepicker--time-only .react-datepicker__time {
  border-radius: 0.3rem;
}

.react-datepicker--time-only .react-datepicker__time-box {
  border-radius: 0.3rem;
}

.react-datepicker__triangle {
  position: absolute;
  left: 50px;
}

.react-datepicker-popper {
  z-index: 1;
}

.react-datepicker-popper[data-placement^='bottom'] {
  margin-top: 10px;
}

.react-datepicker-popper[data-placement='bottom-end']
  .react-datepicker__triangle,
.react-datepicker-popper[data-placement='top-end'] .react-datepicker__triangle {
  left: auto;
  right: 50px;
}

.react-datepicker-popper[data-placement^='top'] {
  margin-bottom: 10px;
}

.react-datepicker-popper[data-placement^='right'] {
  margin-left: 8px;
}

.react-datepicker-popper[data-placement^='right'] .react-datepicker__triangle {
  left: auto;
  right: 42px;
}

.react-datepicker-popper[data-placement^='left'] {
  margin-right: 8px;
}

.react-datepicker-popper[data-placement^='left'] .react-datepicker__triangle {
  left: 42px;
  right: auto;
}

.react-datepicker__header {
  text-align: center;
  border-top-left-radius: 0.3rem;
  border-top-right-radius: 0.3rem;
  padding-top: 15px;
  position: relative;
}

.react-datepicker__header--time {
  padding-bottom: 8px;
  padding-left: 5px;
  padding-right: 5px;
}

.react-datepicker__year-dropdown-container--select,
.react-datepicker__month-dropdown-container--select,
.react-datepicker__month-year-dropdown-container--select,
.react-datepicker__year-dropdown-container--scroll,
.react-datepicker__month-dropdown-container--scroll,
.react-datepicker__month-year-dropdown-container--scroll {
  display: inline-block;
  margin: 0 2px;
}

.react-datepicker__current-month,
.react-datepicker-time__header,
.react-datepicker-year-header {
  margin-top: 0;
  color: #242424;
  font-weight: bold;
  font-size: 14px;
}

.react-datepicker-time__header {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.react-datepicker__navigation {
  line-height: 1.7rem;
  text-align: center;
  position: absolute;
  top: 20px;
  z-index: 1;
  height: 9px;
  width: 6px;
  text-indent: -999em;
  overflow: hidden;
  background-size: 6px 9px;
}

.react-datepicker__navigation--previous {
  left: 56px;
  background-image: url(https://t1.daumcdn.net/depo/datatrend/ico_prev.png);
}


.react-datepicker__navigation--next {
  right: 56px;
  background-image: url(https://t1.daumcdn.net/depo/datatrend/ico_next.png);
}

.react-datepicker__navigation--next--with-time:not(.react-datepicker__navigation--next--with-today-button) {
  right: 80px;
}

.react-datepicker__navigation--years {
  position: relative;
  top: 0;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.react-datepicker__navigation--years-previous {
  top: 4px;
  border-top-color: #ccc;
}

.react-datepicker__navigation--years-previous:hover {
  border-top-color: #b3b3b3;
}

.react-datepicker__navigation--years-upcoming {
  top: -4px;
  border-bottom-color: #ccc;
}

.react-datepicker__navigation--years-upcoming:hover {
  border-bottom-color: #b3b3b3;
}

.react-datepicker__month-container {
  float: left;
}

.react-datepicker__year-container {
  margin: 0.4rem;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
}

.react-datepicker__year-container-text {
  display: inline-block;
  cursor: pointer;
  flex: 1 0 30%;
  width: 12px;
  padding: 2px;
}

.react-datepicker__month {
  margin: 0 16px 16px;
  text-align: center;
}

.react-datepicker__month .react-datepicker__month-text,
.react-datepicker__month .react-datepicker__quarter-text {
  display: inline-block;
  width: 4rem;
  margin: 2px;
}

.react-datepicker__input-time-container {
  clear: both;
  width: 100%;
  float: left;
  margin: 5px 0 10px 15px;
  text-align: left;
}

.react-datepicker__input-time-container .react-datepicker-time__caption {
  display: inline-block;
}

.react-datepicker__input-time-container
  .react-datepicker-time__input-container {
  display: inline-block;
}

.react-datepicker__input-time-container
  .react-datepicker-time__input-container
  .react-datepicker-time__input {
  display: inline-block;
  margin-left: 10px;
}

.react-datepicker__input-time-container
  .react-datepicker-time__input-container
  .react-datepicker-time__input
  input {
  width: 85px;
}

.react-datepicker__input-time-container
  .react-datepicker-time__input-container
  .react-datepicker-time__input
  input[type='time']::-webkit-inner-spin-button,
.react-datepicker__input-time-container
  .react-datepicker-time__input-container
  .react-datepicker-time__input
  input[type='time']::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.react-datepicker__input-time-container
  .react-datepicker-time__input-container
  .react-datepicker-time__input
  input[type='time'] {
  -moz-appearance: textfield;
}

.react-datepicker__input-time-container
  .react-datepicker-time__input-container
  .react-datepicker-time__delimiter {
  margin-left: 5px;
  display: inline-block;
}

.react-datepicker__time-container {
  float: right;
  border-left: 1px solid #aeaeae;
  width: 85px;
}

.react-datepicker__time-container--with-today-button {
  display: inline;
  border: 1px solid #aeaeae;
  border-radius: 0.3rem;
  position: absolute;
  right: -72px;
  top: 0;
}

.react-datepicker__time-container .react-datepicker__time {
  position: relative;
  background: white;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box {
  width: 85px;
  overflow-x: hidden;
  margin: 0 auto;
  text-align: center;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list {
  list-style: none;
  margin: 0;
  height: calc(195px + (1.7rem / 2));
  overflow-y: scroll;
  padding-right: 0px;
  padding-left: 0px;
  width: 100%;
  box-sizing: content-box;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list
  li.react-datepicker__time-list-item {
  height: 30px;
  padding: 5px 10px;
  white-space: nowrap;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list
  li.react-datepicker__time-list-item:hover {
  cursor: pointer;
  background-color: #f0f0f0;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list
  li.react-datepicker__time-list-item--selected {
  background-color: #216ba5;
  color: white;
  font-weight: bold;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list
  li.react-datepicker__time-list-item--selected:hover {
  background-color: #216ba5;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list
  li.react-datepicker__time-list-item--disabled {
  color: #ccc;
}

.react-datepicker__time-container
  .react-datepicker__time
  .react-datepicker__time-box
  ul.react-datepicker__time-list
  li.react-datepicker__time-list-item--disabled:hover {
  cursor: default;
  background-color: transparent;
}

.react-datepicker__week-number {
  color: #ccc;
  display: inline-block;
  width: 1.7rem;
  line-height: 1.7rem;
  text-align: center;
  margin: 0.166rem;
}

.react-datepicker__week-number.react-datepicker__week-number--clickable {
  cursor: pointer;
}

.react-datepicker__week-number.react-datepicker__week-number--clickable:hover {
  border-radius: 0.3rem;
  background-color: #f0f0f0;
}
.react-datepicker__day-names {
  margin-top: 16px;
}
.react-datepicker__day-names,
.react-datepicker__week {
  white-space: nowrap;
  font-size: 0;
}
.react-datepicker__week:first-child {
  text-align: right;
}
.react-datepicker__week:last-child {
  text-align: left;
}

.react-datepicker__day-name,
.react-datepicker__day,
.react-datepicker__time-name {
  color: #555;
  display: inline-block;
  width: 24px;
  height: 24px;
  line-height: 24px;
  text-align: center;
  margin: 2px;
  font-size: 11px;
}

.react-datepicker__day {
  color : #222;
}

.react-datepicker__day-name:first-child,
.react-datepicker__day.holiday {
  color: #F8626C;
}

.react-datepicker__month--selected,
.react-datepicker__month--in-selecting-range,
.react-datepicker__month--in-range,
.react-datepicker__quarter--selected,
.react-datepicker__quarter--in-selecting-range,
.react-datepicker__quarter--in-range,
.react-datepicker__year-container-text--selected,
.react-datepicker__year-container-text--in-selecting-range,
.react-datepicker__year-container-text--in-range {
  border-radius: 0.3rem;
  background-color: #216ba5;
  color: #fff;
}

.react-datepicker__month--disabled,
.react-datepicker__quarter--disabled,
.react-datepicker__year-container-text--disabled {
  color: #ccc;
  pointer-events: none;
}

.react-datepicker__day,
.react-datepicker__month-text,
.react-datepicker__quarter-text {
  cursor: pointer;
}

.react-datepicker__day--highlighted,
.react-datepicker__month-text--highlighted,
.react-datepicker__quarter-text--highlighted {
  border-radius: 0.3rem;
  background-color: #3dcc4a;
  color: #fff;
}

.react-datepicker__day--highlighted-custom-1,
.react-datepicker__month-text--highlighted-custom-1,
.react-datepicker__quarter-text--highlighted-custom-1 {
  color: magenta;
}

.react-datepicker__day--highlighted-custom-2,
.react-datepicker__month-text--highlighted-custom-2,
.react-datepicker__quarter-text--highlighted-custom-2 {
  color: green;
}

.react-datepicker__day--selected,
.react-datepicker__day--in-selecting-range,
/* .react-datepicker__day--in-range, */
.react-datepicker__month-text--selected,
.react-datepicker__month-text--in-selecting-range,
.react-datepicker__month-text--in-range,
.react-datepicker__quarter-text--selected,
.react-datepicker__quarter-text--in-selecting-range,
.react-datepicker__quarter-text--in-range {
  border-radius: 13px;
  font-weight: bold;
  background-color: #FFF0B3;
}

/* .react-datepicker__day--keyboard-selected, */
.react-datepicker__month-text--keyboard-selected,
.react-datepicker__quarter-text--keyboard-selected {
  border-radius: 0.3rem;
  background-color: #2a87d0;
  color: #fff;
}

.react-datepicker__day--in-selecting-range,
.react-datepicker__month-text--in-selecting-range,
.react-datepicker__quarter-text--in-selecting-range {
  background-color: rgba(33, 107, 165, 0.5);
}

.react-datepicker__month--selecting-range .react-datepicker__day--in-range,
.react-datepicker__month--selecting-range
  .react-datepicker__month-text--in-range,
.react-datepicker__month--selecting-range
  .react-datepicker__quarter-text--in-range {
  background-color: #f0f0f0;
  color: #000;
}

.react-datepicker__day--disabled,
.react-datepicker__month-text--disabled,
.react-datepicker__quarter-text--disabled {
  cursor: default;
  opacity: 0.3;
}

.react-datepicker__input-container {
  position: relative;
  display: inline-block;
  width: 100%;
}

.react-datepicker__year-read-view,
.react-datepicker__month-read-view,
.react-datepicker__month-year-read-view {
  border: 1px solid transparent;
  border-radius: 0.3rem;
}

.react-datepicker__year-read-view--down-arrow,
.react-datepicker__month-read-view--down-arrow,
.react-datepicker__month-year-read-view--down-arrow {
  border-top-color: #ccc;
  float: right;
  margin-left: 20px;
  top: 8px;
  position: relative;
  border-width: 0.45rem;
}

.react-datepicker__year-dropdown,
.react-datepicker__month-dropdown,
.react-datepicker__month-year-dropdown {
  background-color: #f0f0f0;
  position: absolute;
  width: 50%;
  left: 25%;
  top: 30px;
  z-index: 1;
  text-align: center;
  border-radius: 0.3rem;
  border: 1px solid #aeaeae;
}

.react-datepicker__year-dropdown--scrollable,
.react-datepicker__month-dropdown--scrollable,
.react-datepicker__month-year-dropdown--scrollable {
  height: 150px;
  overflow-y: scroll;
}

.react-datepicker__year-option,
.react-datepicker__month-option,
.react-datepicker__month-year-option {
  line-height: 20px;
  width: 100%;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.react-datepicker__year-option:first-of-type,
.react-datepicker__month-option:first-of-type,
.react-datepicker__month-year-option:first-of-type {
  border-top-left-radius: 0.3rem;
  border-top-right-radius: 0.3rem;
}

.react-datepicker__year-option:last-of-type,
.react-datepicker__month-option:last-of-type,
.react-datepicker__month-year-option:last-of-type {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  border-bottom-left-radius: 0.3rem;
  border-bottom-right-radius: 0.3rem;
}

.react-datepicker__year-option--selected,
.react-datepicker__month-option--selected,
.react-datepicker__month-year-option--selected {
  position: absolute;
  left: 15px;
}

.react-datepicker__close-icon {
  cursor: pointer;
  background-color: transparent;
  border: 0;
  outline: 0;
  padding: 0px 6px 0px 0px;
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  display: table-cell;
  vertical-align: middle;
}

.react-datepicker__close-icon::after {
  cursor: pointer;
  background-color: #216ba5;
  color: #fff;
  border-radius: 50%;
  height: 16px;
  width: 16px;
  padding: 2px;
  font-size: 12px;
  line-height: 1;
  text-align: center;
  display: table-cell;
  vertical-align: middle;
  content: '\00d7';
}

.react-datepicker__today-button {
  background: #f0f0f0;
  border-top: 1px solid #aeaeae;
  cursor: pointer;
  text-align: center;
  font-weight: bold;
  padding: 5px 0;
  clear: left;
}

.react-datepicker__portal {
  position: fixed;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.8);
  left: 0;
  top: 0;
  justify-content: center;
  align-items: center;
  display: flex;
  z-index: 2147483647;
}

.react-datepicker__portal .react-datepicker__day-name,
.react-datepicker__portal .react-datepicker__day,
.react-datepicker__portal .react-datepicker__time-name {
  width: 3rem;
  line-height: 3rem;
}

@media (max-width: 400px), (max-height: 550px) {
  .react-datepicker__portal .react-datepicker__day-name,
  .react-datepicker__portal .react-datepicker__day,
  .react-datepicker__portal .react-datepicker__time-name {
    width: 2rem;
    line-height: 2rem;
  }
}

.react-datepicker__portal .react-datepicker__current-month,
.react-datepicker__portal .react-datepicker-time__header {
  font-size: 1.44rem;
}

.react-datepicker__portal .react-datepicker__navigation {
  border: 0.81rem solid transparent;
}

.react-datepicker__portal .react-datepicker__navigation--previous {
  border-right-color: #ccc;
}

.react-datepicker__portal .react-datepicker__navigation--previous:hover {
  border-right-color: #b3b3b3;
}

.react-datepicker__portal .react-datepicker__navigation--previous--disabled,
.react-datepicker__portal
  .react-datepicker__navigation--previous--disabled:hover {
  border-right-color: #e6e6e6;
  cursor: default;
}

.react-datepicker__portal .react-datepicker__navigation--next {
  border-left-color: #ccc;
}

.react-datepicker__portal .react-datepicker__navigation--next:hover {
  border-left-color: #b3b3b3;
}

.react-datepicker__portal .react-datepicker__navigation--next--disabled,
.react-datepicker__portal .react-datepicker__navigation--next--disabled:hover {
  border-left-color: #e6e6e6;
  cursor: default;
}