.field--widget-datetime-range-flatpickr .form-item,
.field--widget-datetime-flatpickr .form-item,
.field--widget-datetime-range-separate-inputs-flatpickr div.form-item:not(.same-day) {
  background: url("../images/calendar.svg") no-repeat left bottom;
  background-size: 20px 20px;
}

.field--widget-datetime-range-flatpickr .form-item input,
.field--widget-datetime-flatpickr .form-item input,
.field--widget-datetime-range-separate-inputs-flatpickr div.form-item input {
  margin-left: 25px;
}