dayjs.extend(dayjs_plugin_duration);

function activateCountdown(date) {
  const targetDate = dayjs(date);

  setInterval(() => {
    const now = dayjs();
    const duration = dayjs.duration(targetDate.diff(now));

    if (duration.asMilliseconds() <= 0) return;

days = duration.asDays();
if (days < 1) {
  days = 0
}

nixieDate1.setText(days.toFixed(0).toString().padStart(2, "0") + "-" + duration.hours().toString().padStart(2, "0") + duration.minutes().toString().padStart(2, "0") + duration.seconds().toString().padStart(2, "0"));
  }, 250);
}

document.querySelector("form")
  .addEventListener('submit', function(event) {
    event.preventDefault();
    activateCountdown(document.getElementById("input__time").value);
    createCard(event);
  })

  function createCard(event){      
  event.target.style.display = "none";
}