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CSS

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CSS Base

About CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <!-- BootStrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">

<!-- Google Fonts -->
<link href="https://fonts.googleapis.com/css?family=Roboto|Roboto+Mono" rel="stylesheet">

<body>
  <div class="wrapper">
    <!-- Content -->
    <div class="main-content">
      <div class="counterDown text-center">
        <h1>COMING SOON</h1>
        <hr>
        <div id="demo">
          <div id="jours" class="text-center"></div>
          <div id="heures" class="text-center"></div>
          <div id="minutes" class="text-center"></div>
          <div id="secondes" class="text-center"></div>
        </div>
        <div id="infos">
            <div class="infos-jours">Jours</div>
            <div class="infos-heures">Heures</div>
            <div class="infos-minutes">Minutes</div>
            <div class="infos-secondes">Secondes</div>
        </div>
      </div>
    </div>
    
    <!-- Footer -->
    <footer class="text-center">
      <p>Copyright Marc Schneider - <span id="annee"></span> © Tous droits réservés. </p>
    </footer>
  </div>
  
  <!-- JavaScript -->
  <script type="text/javascript">
    // Date de fin
var countDownDate = new Date('Jul 12, 2018 00:00:00').getTime();

// Update toutes les 1 secondes
var x = setInterval(function() {
  
  // Récupération de la date du jour
  var now = new Date().getTime();
  
  // Calcul de la distance entre aujourd'hui et la fin
  var distance = countDownDate - now;
  
  //Calcul des temps
  var days = Math.floor(distance / (1000 * 60 * 60 * 24));
  
  var hours = Math.floor ((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  
  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
  
  var seconds = Math.floor((distance % (1000 * 60)) / 1000);
  
  // Affichage du résultat dans l'id=demo
  document.getElementById("jours").innerHTML = days;
  document.getElementById("heures").innerHTML = hours;
  document.getElementById("minutes").innerHTML = minutes;
  document.getElementById("secondes").innerHTML = seconds;
  
  // On stylise les éléments
  document.getElementById("jours").style.backgroundColor = 'rgba(126,85,39,0.2)';
  document.getElementById("heures").style.backgroundColor = 'rgba(126,85,39,0.2)';
  document.getElementById("minutes").style.backgroundColor = 'rgba(126,85,39,0.2)';
  document.getElementById("secondes").style.backgroundColor = 'rgba(126,85,39,0.2)';
  
  document.getElementById("jours").style.color = 'rgb(126,85,39)';
  document.getElementById("heures").style.color = 'rgb(126,85,39)';
  document.getElementById("minutes").style.color = 'rgb(126,85,39)';
  document.getElementById("secondes").style.color = 'rgb(126,85,39)';
  
  document.getElementById("jours").font.weight = 'bold';
  document.getElementById("heures").font.weight = 'bold';
  document.getElementById("minutes").font.weight = 'bold';
  document.getElementById("secondes").font.weight = 'bold';
  
  // Si le compteur arrive à la fin
  if (distance < 0) {
    clearInterval(x);
    document.getElementById("demo").innerHTML = "EXPIRED";
  }
}, 1000);
  </script>
  
  <script type="text/javascript">
    var date = new Date();
    var annee = date.getFullYear();

    document.getElementById('annee').innerHTML = annee;
  </script>
  
</body>
!

CSS 

              
                * {
    border: 0;
    margin: 0;
    padding: 0;
}

html {
    font-family: -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", "Fira Sans",
    "Droid Sans", "Helvetica Neue", sans-serif;
    font-size: 62.5%; /* 1rem vaut 10px */
}

body {
    font-size: 1.4rem; /* 1.4 rem vaut 14px */
    height: 100%;
}

.wrapper {
  display: flex;
  background-image: url('https://cdn.allwallpaper.in/wallpapers/2400x1350/926/fog-forests-landscapes-trees-2400x1350-wallpaper.jpg');
  background-size: cover;
  color: rgb(245,245,245);
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  display: flex;
  flex: 1;
}

.counterDown {
  margin: auto;
}

.counterDown h1 {
  font-size: 4rem;
}

hr {
  background-color: rgba(255,255,255, 0.8);
}

#demo {
  display: flex;
  flex-direction: row;
  font-size: 1.6rem;
}

#jours {
  font-family: "Roboto Mono", sans-serif;
  font-size: 4rem;
  height: 10rem;
  margin-right: 1rem;
  width: 8rem;
}

#heures {
  font-family: "Roboto Mono", sans-serif;
  font-size: 4rem;
  height: 10rem;
  margin-right: 1rem;
  width: 8rem;
}

#minutes {
  font-family: "Roboto Mono", sans-serif;
  font-size: 4rem;
  height: 10rem;
  margin-right: 1rem;
  width: 8rem;
}

#secondes {
  font-family: "Roboto Mono", sans-serif;
  font-size: 4rem;
  height: 10rem;
  margin: auto;
  width: 8rem;
}

#infos {
  color: rgba(126,85,39,1);
  display: flex;
  flex-direction: row;
  font-size: 1.6rem;
}

.infos-jours {
  font-family: "Roboto Mono", sans-serif;
  margin-right: 1rem;
  margin-top: -3rem;
  width: 8rem;
}

.infos-heures {
  font-family: "Roboto Mono", sans-serif;
  margin-right: 1rem;
  margin-top: -3rem;
  width: 8rem;
}

.infos-minutes {
  font-family: "Roboto Mono", sans-serif;
  margin-right: 1rem;
  margin-top: -3rem;
  width: 8rem;
}

.infos-secondes {
  font-family: "Roboto Mono", sans-serif;
  margin: auto;
  margin-top: -3rem;
  width: 8rem;
}

/* Footer */
footer {
  border-top: 1px solid rgba(255,255,255, 0.5);
  font-size: 1.3rem;
  padding-top: 0.6rem;
  margin-left: auto;
  margin-right: auto;
  width: 80%;
}
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JS
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