.bg-02-box {
    display: flex;
    flex-direction: column;
    width: 16rem;
    height: auto;
}

.bg-02-box01 {
    left: -1rem;
    position: relative;
}

.bg-02-box02 {
    left: 0rem;
    position: relative;
}

.bg-02-box03 {
    left: -1.2rem;
    position: relative;
}

@media (min-width: 820px) {
    .bg-02-box {
        position: fixed;
        top: 0;
        bottom: 0;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .bg-02-box {
        margin-left: 0;
    }
}