style.css

*{
    padding:0;
    margin:0;
    box-sizing: border-box;
}
body{
    background-color: rgb(255, 212, 212);
    height:100vh;
    display:flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

}
h1{
    margin-top: 20px;
    color: rgb(198, 0, 0);
    font-family: Impact, fantasy;
}
.social{
    font-size: 30px;
 margin-top: 5px;
}
a{
 color: transparent;
}
i{
 color: rgb(198, 0, 0);
}
.jogo-da-memoria{
    height: 38vw;
    width: 38vw;
    margin: auto;
    display: flex;
    flex-wrap: wrap;

}
.carta{
    height: calc(33.333% - 10px);
    width: calc(25% - 10px);
    display: flex;
    align-items: center;
    margin: 5px;
    background-color: white;
    box-shadow: 1px 1px 1px rgba(1, 1, 1, 0.3);
    cursor: pointer;
    transform: scale(1);
    transform-style: preserve-3d;
    transition: transform .9s;

}
.carta:active{
    transform: scale(0.97);
    transition: transform .3s;
}
.frente, .verso{
    width: 100%;
    height: auto;
    padding: 20px;
    position: absolute;
    border-radius: 5px;
    background-color: white;
    backface-visibility: hidden;
    
}
.frente{
    transform: rotateY(180deg);
}
/* ANIMAÇÃO DE VIRADA */
.virada{
    transform: rotateY(180deg);
}