antd-mobile/2x/cjs/components/calendar/calendar.css

<img src="https://gw.alipayobjects.com/mdn/rms_ee68a8/afts/img/A*hjjDS5Yy-ooAAAAAAAAAAAAAARQnAQ" alt="logo" width="100%" />

.adm-calendar .adm-calendar-header {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
}

.adm-calendar .adm-calendar-header a.adm-calendar-arrow-button {
  padding: 8px 16px;
  display: block;
  flex: none;
}

.adm-calendar .adm-calendar-header a.adm-calendar-arrow-button svg {
  height: 44px;
}

.adm-calendar .adm-calendar-header a.adm-calendar-arrow-button.adm-calendar-arrow-button-right svg {
  transform: rotate(180deg);
}

.adm-calendar .adm-calendar-header .adm-calendar-title {
  font-size: 36px;
  flex: auto;
  text-align: center;
}

.adm-calendar .adm-calendar-body {
  display: flex;
  flex-wrap: wrap;
}

.adm-calendar-cells {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: stretch;
  padding: 16px 16px 8px;
}

.adm-calendar-cell {
  flex: none;
  box-sizing: border-box;
  width: calc(100% / 7);
  height: 96px;
  margin-bottom: 8px;
  padding: 4px;
  color: var(--adm-color-text);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
}

.adm-calendar-cell.adm-calendar-cell-today {
  color: var(--adm-color-primary);
}

.adm-calendar-cell.adm-calendar-cell-out {
  color: var(--adm-color-light);
}

.adm-calendar-cell.adm-calendar-cell-out .adm-calendar-cell-bottom {
  color: var(--adm-color-light);
}

.adm-calendar-cell.adm-calendar-cell-selected.adm-calendar-cell.adm-calendar-cell-selected {
  background: var(--adm-color-primary);
  color: var(--adm-color-white);
}

.adm-calendar-cell.adm-calendar-cell-selected .adm-calendar-cell-bottom {
  color: var(--adm-color-white);
}

.adm-calendar-cell.adm-calendar-cell-selected.adm-calendar-cell.adm-calendar-cell-selected-begin {
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
}

.adm-calendar-cell.adm-calendar-cell-selected.adm-calendar-cell.adm-calendar-cell-selected-end {
  border-top-right-radius: 8px;
  border-bottom-right-radius: 8px;
}

.adm-calendar-cell .adm-calendar-cell-top {
  flex: none;
  font-size: 36px;
}

.adm-calendar-cell .adm-calendar-cell-bottom {
  flex: none;
  font-size: 24px;
  height: 24px;
  line-height: 24px;
  color: var(--adm-color-weak);
}

.adm-calendar-mark {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  border-bottom: solid 2px var(--adm-border-color);
  height: 90px;
  box-sizing: border-box;
  font-size: 30px;
  padding: 0 16px;
}

.adm-calendar-mark .adm-calendar-mark-cell {
  flex: 1;
  text-align: center;
}