CodePen Embed - Draft Countdown

<div class="wrap">  
  <h1>Draft <strong>Countdown</strong></h1>

  <div class="countdown">
    <div class="bloc-time hours" data-init-value="24">
      <span class="count-title">Hours</span>

      <div class="figure hours hours-1">
        <span class="top">2</span>
        <span class="top-back">
          <span>2</span>
        </span>
        <span class="bottom">2</span>
        <span class="bottom-back">
          <span>2</span>
        </span>
      </div>

      <div class="figure hours hours-2">
        <span class="top">4</span>
        <span class="top-back">
          <span>4</span>
        </span>
        <span class="bottom">4</span>
        <span class="bottom-back">
          <span>4</span>
        </span>
      </div>
    </div>

    <div class="bloc-time min" data-init-value="0">
      <span class="count-title">Minutes</span>

      <div class="figure min min-1">
        <span class="top">0</span>
        <span class="top-back">
          <span>0</span>
        </span>
        <span class="bottom">0</span>
        <span class="bottom-back">
          <span>0</span>
        </span>        
      </div>

      <div class="figure min min-2">
       <span class="top">0</span>
        <span class="top-back">
          <span>0</span>
        </span>
        <span class="bottom">0</span>
        <span class="bottom-back">
          <span>0</span>
        </span>
      </div>
    </div>

    <div class="bloc-time sec" data-init-value="0">
      <span class="count-title">Seconds</span>

        <div class="figure sec sec-1">
        <span class="top">0</span>
        <span class="top-back">
          <span>0</span>
        </span>
        <span class="bottom">0</span>
        <span class="bottom-back">
          <span>0</span>
        </span>          
      </div>

      <div class="figure sec sec-2">
        <span class="top">0</span>
        <span class="top-back">
          <span>0</span>
        </span>
        <span class="bottom">0</span>
        <span class="bottom-back">
          <span>0</span>
        </span>
      </div>
    </div>
  </div>
</div>

@import "compass/css3";

// Global
body {
  background-color: #f2f1ed;
}

.wrap {
  position: absolute;
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  margin: auto;
  height: 310px;  
}

a {
  text-decoration: none;
  color: #1a1a1a;
}

// Variables
$lato: 'Lato';

// Title
h1 {  
  margin-bottom: 60px;
  text-align: center;
  font: 300 2.25em $lato;
  text-transform: uppercase;
  
  strong {
    font-weight: 400;
    color: #ea4c4c;
  }  
}

h2 {
  margin-bottom: 80px;  
  text-align: center;  
  font: 300 0.7em $lato; 
  text-transform: uppercase;  
  
  strong {    
    font-weight: 400;   
  }
}

// Countdown
.countdown {
  width: 720px;
  margin: 0 auto;

  .bloc-time {
    float: left;    
    margin-right: 45px;    
    text-align: center;    

    &:last-child {
      margin-right: 0;
    }
  }

  .count-title {
    display: block;
    margin-bottom: 15px;
    font: normal 0.94em $lato;
    color: #1a1a1a;
    text-transform: uppercase;
  }

  .figure {
    position: relative;
    float: left;
    height: 110px;
    width: 100px;
    margin-right: 10px;
    background-color: #fff;
    border-radius: 8px; 
    @include box-shadow(0 3px 4px 0 rgba(0, 0, 0, .2),inset 2px 4px 0 0 rgba(255, 255, 255, .08));

    &:last-child {
      margin-right: 0;
    }
  
    >span {
      position: absolute;
      left: 0;
      right: 0;
      margin: auto;
      font: normal 5.94em/107px $lato;
      font-weight: 700;
      color: #de4848;
    }

    .top, .bottom-back {    
      &:after {
        content: "";
        position: absolute;
        z-index: -1;
        left: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, .1);
      }
    }

    .top {
      z-index: 3;
      background-color: #f7f7f7;
      transform-origin: 50% 100%;
      -webkit-transform-origin: 50% 100%; 
      @include border-top-radius(10px); 
      @include transform(perspective(200px));
    }

    .bottom {  
      z-index: 1;
      
      &:before {
        content: "";
        position: absolute;
        display: block; 
        top: 0;
        left: 0;
        width: 100%;
        height: 50%;
        background-color: rgba(0, 0, 0, .02);
      }
    }

    .bottom-back {
      z-index: 2;
      top: 0;
      height: 50%;
      overflow: hidden;    
      background-color: #f7f7f7;
      @include border-top-radius(10px);

      span {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        margin: auto;
      }
    }

    .top, .top-back {
      height: 50%;
      overflow: hidden;
      @include backface-visibility(hidden);
    }

    .top-back {
      z-index: 4;
      bottom: 0;
      background-color: #fff;
      -webkit-transform-origin: 50% 0;
      transform-origin: 50% 0;
      @include transform(perspective(200px) rotateX(180deg));
      @include border-bottom-radius(10px); 

      span {
        position: absolute;
        top: -100%;
        left: 0;
        right: 0;
        margin: auto;
      }
    }
  }
}

View Compiled

// Create Countdown
var Countdown = {
  
  // Backbone-like structure
  $el: $('.countdown'),
  
  // Params
  countdown_interval: null,
  total_seconds     : 0,
  
  // Initialize the countdown  
  init: function() {
    
    // DOM
		this.$ = {
    	hours  : this.$el.find('.bloc-time.hours .figure'),
    	minutes: this.$el.find('.bloc-time.min .figure'),
    	seconds: this.$el.find('.bloc-time.sec .figure')
   	};

    // Init countdown values
    this.values = {
	      hours  : this.$.hours.parent().attr('data-init-value'),
        minutes: this.$.minutes.parent().attr('data-init-value'),
        seconds: this.$.seconds.parent().attr('data-init-value'),
    };
    
    // Initialize total seconds
    this.total_seconds = this.values.hours * 60 * 60 + (this.values.minutes * 60) + this.values.seconds;

    // Animate countdown to the end 
    this.count();    
  },
  
  count: function() {
    
    var that    = this,
        $hour_1 = this.$.hours.eq(0),
        $hour_2 = this.$.hours.eq(1),
        $min_1  = this.$.minutes.eq(0),
        $min_2  = this.$.minutes.eq(1),
        $sec_1  = this.$.seconds.eq(0),
        $sec_2  = this.$.seconds.eq(1);
    
        this.countdown_interval = setInterval(function() {

        if(that.total_seconds > 0) {

            --that.values.seconds;              

            if(that.values.minutes >= 0 && that.values.seconds < 0) {

                that.values.seconds = 59;
                --that.values.minutes;
            }

            if(that.values.hours >= 0 && that.values.minutes < 0) {

                that.values.minutes = 59;
                --that.values.hours;
            }

            // Update DOM values
            // Hours
            that.checkHour(that.values.hours, $hour_1, $hour_2);

            // Minutes
            that.checkHour(that.values.minutes, $min_1, $min_2);

            // Seconds
            that.checkHour(that.values.seconds, $sec_1, $sec_2);

            --that.total_seconds;
        }
        else {
            clearInterval(that.countdown_interval);
        }
    }, 1000);    
  },
  
  animateFigure: function($el, value) {
    
     var that         = this,
		     $top         = $el.find('.top'),
         $bottom      = $el.find('.bottom'),
         $back_top    = $el.find('.top-back'),
         $back_bottom = $el.find('.bottom-back');

    // Before we begin, change the back value
    $back_top.find('span').html(value);

    // Also change the back bottom value
    $back_bottom.find('span').html(value);

    // Then animate
    TweenMax.to($top, 0.8, {
        rotationX           : '-180deg',
        transformPerspective: 300,
	      ease                : Quart.easeOut,
        onComplete          : function() {

            $top.html(value);

            $bottom.html(value);

            TweenMax.set($top, { rotationX: 0 });
        }
    });

    TweenMax.to($back_top, 0.8, { 
        rotationX           : 0,
        transformPerspective: 300,
	      ease                : Quart.easeOut, 
        clearProps          : 'all' 
    });    
  },
  
  checkHour: function(value, $el_1, $el_2) {
    
    var val_1       = value.toString().charAt(0),
        val_2       = value.toString().charAt(1),
        fig_1_value = $el_1.find('.top').html(),
        fig_2_value = $el_2.find('.top').html();

    if(value >= 10) {

        // Animate only if the figure has changed
        if(fig_1_value !== val_1) this.animateFigure($el_1, val_1);
        if(fig_2_value !== val_2) this.animateFigure($el_2, val_2);
    }
    else {

        // If we are under 10, replace first figure with 0
        if(fig_1_value !== '0') this.animateFigure($el_1, 0);
        if(fig_2_value !== val_1) this.animateFigure($el_2, val_1);
    }    
  }
};

// Let's go !
Countdown.init();

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