body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height:  100vh;
    background: #fc1e8a;
   user-select: none;

}

.container {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap:30px;
    background: linear-gradient(325deg,#03001e 0%,#7303c0 30%, #ec38ec 70%, #fdeff9 100%);
    padding: 40px 60px;

}
h2{
    font-size: 3em;
    color:#fff;
    text-transform: uppercase;
    letter-spacing:  0.1em;

}
.reset{
    padding:  15px 20px;
    width: 100%;
    color: #000;
    background-color: #fff;
    border: none;
    font-size: 1.5em;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor:pointer;
    font-weight: 600;
}
.reset:focus {
    color: #ec38bc;
    background-color: #262809;
}
.game{
    
    width:430px;
    height: 430px;
    display: flex;
    flex-wrap: wrap;
    gap:10px;
    transform-style: preserve-3d;
    perspective: 500px;

}
.item{
    position: relative;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    font-size: 3em;
    transform: rotateY(180deg);
    transition: 0.25s;
}
.item::after{
content: "";
position:absolute;
inset: 0;
background:#262809 ;
transition: 0.25s;
transform: rotateY(0deg);
backface-visibility: hidden;
}
.item.boxOpen{
    transform: rotateY(0deg);
}
.boxOpen::after{
    transform: rotateY(180deg);
}