.mail-delivery-compact .mail-delivery-footer { display: flex; justify-content: flex-start; }
.mail-delivery .mail-send-dialog .mail-send-ack {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  margin: 18px 0;
  padding: 0;
}
.mail-delivery .mail-send-dialog .mail-send-ack > input[type="checkbox"] {
  box-sizing: border-box;
  width: 18px;
  min-width: 18px;
  height: 18px;
  min-height: 18px;
  flex: 0 0 18px;
  margin: 3px 0 0;
  padding: 0;
}
.mail-delivery .mail-send-dialog .mail-send-ack > span {
  min-width: 0;
  margin: 0;
}