style.css

* {
    margin: 0;
    padding: 0;
}

.poster {
    position: relative;
    width: 200px;
    height: 250px;
    border-radius: 10px;
    background-color: rgb(133, 166, 220);
    animation: poster-ani 1.6s infinite linear alternate;
    transform-style: preserve-3d;
}   

.poster-title {
    padding: 0.5em;
    font-size: 2.5rem;
    font-weight: normal;
    text-align: center;
    letter-spacing: 2px;
    font-family: 'SDSwagger';
    color: rgb(43, 40, 40);
    transform: translatez(40px);
}

img { 
    max-width: 100%;
    height: auto;
}

.world {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100vw;
    height: 100vh;
    perspective: 1000px;
}

@keyframes poster-ani {
    0% {
        transform: rotateY(-20deg);
    }
    100% {
        transform: rotateY(20deg);
    }
}

.diving {
    position: absolute;
    width: 40%;
}

.diving:nth-of-type(1) {
    width: 90%;
    left: 40%;
    bottom: 10%;
    transform: translatez(70px);
}

.diving:nth-of-type(2) {
    width: 80%;
    right: 35%;
    bottom: 20%;
    transform: translatez(60px);

}

.diving:nth-of-type(3) {
    width: 90%;
    top: 45%;
    transform: translatez(55px);
}