*{
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
body{
    height: 100vh;
    background-color:darkkhaki;
    display: flex;
}
h1{
    width: 500px;
    padding-top: 10px;
    padding-bottom: 100;
    position: absolute;
    left:32%;
    text-align: center;
}
.container{
    width: 500px;
    height: 500px;
    margin: auto;
    display: flex;
    flex-wrap: wrap;
    perspective: 1000px;
}
.card{
    width: 23%;
    height: 23%;
    margin: 5px;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.3s;
    cursor: pointer;
}
.card:active{
    transform: scale(0.95);
    transition: transform 0.2s ease-in-out;
}
.card.flip{
    transform: rotateY(180deg);
    cursor: pointer;
}
.frontSide, .backSide{
    background-color:bisque;
    width: 100%;
    height: 100%;
    padding: 10px;
    border-radius: 10px;
    position: absolute;
    backface-visibility: hidden;
}
.frontSide{
    transform: rotateY(180deg);
}