style.css

*{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

.container{
    height: 100vh;
    width: 100vw;
    display: flex;
    background-image: url(background.jpg);
    background-position: bottom;
    background-size: cover;
}

.first-layer{
    animation: horizontal-ani 6s linear 1s infinite alternate;
}

.second-layer{
    animation: vertical-ani 4s  cubic-bezier(0.71, 0.02, 0.5, 0.99) 1s infinite alternate;
    position: absolute;
    left: 0;
    bottom: 20px;
}

.third-layer{
    animation: rotate-ani 6s linear 1s infinite alternate;
    height: 100px;
    width: 100px;
    border-radius: 50%;
    filter: invert(5%);
}

@keyframes rotate-ani {
    from{
        transform: rotate(0deg);
    }
    to{
        transform: rotate(2080deg);
    }
}

@keyframes horizontal-ani {
    from{
        transform: translateX(0vw);
        filter: drop-shadow(-15px 15px 15px rgba(0, 0, 0, 0.6));
    }
    to{
        transform: translateX(92.2vw);
        filter: drop-shadow(15px 15px 15px rgba(0, 0, 0, 0.6));

    }
}

@keyframes vertical-ani {
    0%{
        transform: translateY(0vh);
        transform: scale(1, 0.8);
    }
    10%{
        transform: translateY(-20vh);
    }
    20%{
        transform: translateY(0vh);
        transform: scale(1, 0.8);
    }
    30%{
        transform: translateY(-20vh);
    }
    40%{
        transform: translateY(0vh);
        transform: scale(1, 0.8);
    }
    50%{
        transform: translateY(-20vh);
    }
    60%{
        transform: translateY(0vh);
        transform: scale(1, 0.8);
    }
    70%{
        transform: translateY(-20vh);
    }
    80%{
        transform: translateY(0vh);
        transform: scale(1, 0.8);
    }
    90%{
        transform: translateY(-20vh);
    }
    100%{
        transform: translateY(0vh);
        transform: scale(1, 0.8);
    }
}