ant-design-vue/components/vc-calendar/assets/common/index.less

@prefixClass: rc-calendar;
@timePickerClass: rc-time-picker;

.@{prefixClass} {
  box-sizing: border-box;
  * {
    box-sizing: border-box;
  }
}

.@{prefixClass}-hidden {
  display: none;
}

@import "Calendar.less";
@import "Picker.less";