Create card-like elements that flip on hover. The goal here is to allow for markup where you can have any content you want on the front or the back of the card. Simply set the size of the containing .flip-card element and put whatever you want into .fro

index.html

<div class="viewport">
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      I'd love a
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      dribbble
    </div>
  </div>
  
  
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      invite
    </div>
  </div>
  
  
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      please!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
  
  
  <div class="flip-card">
    <div class="card-front">
      Front!
    </div>
    <div class="card-back">
      Back!
    </div>
  </div>
  
</div>

style.scss

@import "compass";
$default-transition-duration: 500ms;
$perspective: 300;

/***
* CSS3 FLIP CARDS
* Markup for an element that a user can hover to reveal content on the back, like a card
* Browser Support: Safari, Firefox, Chrome, IE9;
***/

.flip-card {
  display: block;
  position: relative;
  z-index: 1000;
  width: 100px; 
  height: 100px;
  
  .card-front,
  .card-back {
    @include backface-visibility(hidden);
    @include single-transition(transform);
    display: block;
    height: 100%;
    position: absolute;
    width: 100%; 
  }

  .card-front {
    @include transform3d(perspective($perspective) rotateY(0));
    z-index: 900;
  }

  .card-back {
    @include rotateY(-180deg); //Using rotate instead of transform prevents the back of the card from flipping on page load because transition is only targeting transform. Super sweet. 
     z-index: 800;
  }

  &:hover {
    .card-front { @include transform3d(perspective($perspective) rotateY(180deg)); }
    .card-back { @include transform3d(perspective($perspective) rotateY(0deg)); }
  }
}




/*** Just for show... ***/

.flip-card {
  @include text-shadow(1px 1px 0 rgba(darken(#1B8CE8, 20%), .8) );
  color: #fff;
  cursor: pointer;
  float: left;
  font-weight: bold;
  margin: 10px;
  text-align: center;
  text-transform: uppercase;
  min-width: 100px;
  max-width: 400px;
  
  .card-front,
  .card-back {
    @include border-radius(5px);
    @include box-shadow(1px 1px 2px rgba(darken(#1B8CE8, 20%), .8));
    @include box-sizing(border-box);
    border: 1px solid darken(#1B8CE8, 40%);
    padding: 40px 0;
  }

  .card-front {
    @include box-sizing(border-box);
    background-color: #499bea; // Old browsers
		@include filter-gradient(#499bea, #207ce5, vertical);
		@include background-image(linear-gradient(top,  #499bea 0%,#207ce5 100%));

  }

  .card-back {
    @include box-shadow(0 0 20px rgba(darken(#1B8CE8, 10%), .8) inset);
		background-color: #478ce0; // Old browsers
		@include filter-gradient(#478ce0, #0263db, vertical); // IE6-9
		@include background-image(linear-gradient(top,  #478ce0 0%,#1168db 100%,#0263db 100%));
  } 
}



body {
  background-color: #e6f2f7; // Old browsers
  @include filter-gradient(#e6f2f7, #a0d8ef, horizontal); 
  @include background-image(radial-gradient(center, circle cover,  #e6f2f7 0%,#a0d8ef 100%));

}

.viewport {
  margin: 10px auto 0;
  width: 500px;
}