(function () {
  const second = 1000,
        minute = second * 60,
        hour = minute * 60,
        day = hour * 24;
  const countDown = new Date("Jun 6, 2023 20:30:00").getTime(),
      x = setInterval(function() {    

        const now = new Date().getTime(),
              distance = countDown - now;

        document.getElementById("days").innerText = Math.floor(distance / (day)),
          document.getElementById("hours").innerText = Math.floor((distance % (day)) / (hour)),
          document.getElementById("minutes").innerText = Math.floor((distance % (hour)) / (minute)),
          document.getElementById("seconds").innerText = Math.floor((distance % (minute)) / second);

        if (distance < 0) {
          document.getElementById("headline").innerText = "Get Ready!";
          document.getElementById("countdown").style.display = "none";
          clearInterval(x);
        }
      }, 0)
  }());