/* Box Model Hack */
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

/* Clear fix hack */
.clearfix:after {
     content: ".";
     display: block;
     clear: both;
     visibility: hidden;
     line-height: 0;
     height: 0;
}

.clear {
	clear: both;
}

/******************************************
/* BASE STYLES
/*******************************************/

body {
  height: 100vh;
  background:red;
  display: flex;
}

.instructions{
  margin: auto;
  display:flex;
  flex-wrap: wrap;
  justify-content: center;
  color:white;
  width:30%;
  border: 4px dotted white;
  padding:5px;
  font-size:30px;
}



.game{
  width:750px;
  height:750px;
  margin: auto;
  display:flex;
  flex-wrap: wrap;
  perspective: 1000px;
}

.card{
  width:calc(25% - 10px);
  height:calc(33.333% - 10px);
  margin: 5px;
  position: relative; 
  transform-style: preserve-3d;
  transform:scale(1);
  transition: transform .5s;
  box-shadow: 1px 1px 1px rgba(0,0,0,.3);
}

.card:active{
  transform: scale(0.97);
  transition:transfrom .2s;
}

.card.flip{
  transform: rotateY(180deg);
}

.front, .back{
  position: absolute;
  height: 100%;
  width:100%;
  padding: 20px;
  border-radius: 5px;
  background:white;
  backface-visibility: hidden;
}

.front{
  transform: rotateY(180deg);
}



/******************************************
/* LAYOUT
/*******************************************/
header {

}

footer {

}

/******************************************
/* ADDITIONAL STYLES
/*******************************************/

/* .front-face,
.back-face {
  width: 100%;
  height: 100%;
  padding: 20px;
  position: absolute;
  border-radius: 5px;
  background: #1C7CCC;
  backface-visibility: hidden;
}

.front-face {
  transform: rotateY(180deg);
} */