.image-container{
    position:relative;
    width:200px;
    height:200px;
    transform-style: preserve-3d;
    transform: perspective(1000px) rotateY(0deg);
    transition: transform 0.7s;
}
.image-container span{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    transform: rotateY(calc(var(--i) * 45deg)) translateZ(400px);
}
.image-container span img{
    position:absolute;
    left:0;
    top:0;
    width:100%;
    border-radius: 5px;
}

.btn-container{
    position:relative;
    width:80%;
}
.btn{
    position: absolute;
    bottom:-80px;
    background-color: orangered;
    color:white;
    padding:10px 20px;
    border-radius: 5px;
    border:none;
    cursor: pointer;
}
.btn:hover{
    filter:brightness(1.5);
}
#prev{
    left:7%;
}
#next{
    right:-79%;
}