How to Make Responsive Coming Soon Page With Countdown with HTML , CSS and JS

Hi Everyone

I will represent how to make Responsive Coming Soon Page With Countdown

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Code HTML

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Code CSS

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* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif;
  color: #fff;
  background: #333;
  overflow: hidden;
}

.landing {
  position: relative;
  background-image: url('../img/01.png');
  background-size: cover;
  background-position: center;
  height: 100vh;
}

.landing-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  text-align: center;
  padding-top: 50px;
}


.landing h1 {
  font-size: 50px;
}

.landing p {
  font-size: 20px;
}

.countdown {
  font-size: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.countdown div {
  padding: 20px;
  border: 1px #fff solid;
  border-radius: 10px;
  background: #000;
  opacity: 0.7;
  margin: 5px;
}

.countdown div:first-child {
  background: #17a2b8;
}

.countdown span {
  display: block;
  font-size: 25px;
}

@media (max-width: 650px) {
  .landing img {
    width: 70%;
  }

  .landing h1 {
    font-size: 40px;
  }

  .countdown {
    font-size: 30px;
    flex-direction: column;
  }

  .countdown div {
    display: none;
  }

  .countdown div:first-child {
    display: block;
    width: 80%;
    padding: 10px;
  }
}


@media (max-height: 600px) {
  img {
    width: 20%;
  }

  p {
    display: none;
  }
}

@media (max-height: 400px) {
   img {
    padding-bottom: 30px;
  }
  
  h1 {
    display: none;
  }
}

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Code JS

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const countdown = document.querySelector('.countdown');

// Set Launch Date (ms)
const launchDate = new Date('Jan 1, 2019 13:00:00').getTime();

// Update every second
const intvl = setInterval(() => {
    // Get todays date and time (ms)
    const now = new Date().getTime();

    // Distance from now and the launch date (ms)
    const distance = launchDate - now;

    // Time calculation
    const days = Math.floor(distance / (1000 * 60 * 60 * 24));
    const hours = Math.floor(
        (distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)
    );
    const mins = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
    const seconds = Math.floor((distance % (1000 * 60)) / 1000);

    // Display result
    countdown.innerHTML = `
  <div>${days}<span>Days</span></div> 
  <div>${hours}<span>Hours</span></div>
  <div>${mins}<span>Minutes</span></div>
  <div>${seconds}<span>Seconds</span></div>
  `;

    // If launch date is reached
    if (distance < 0) {
        // Stop countdown
        clearInterval(intvl);
        // Style and output text
        countdown.style.color = '#17a2b8';
        countdown.innerHTML = 'Launched!';
    }
}, 1000);

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🎄Thanks and have a nice day🎄