.right-box-container {
    text-align: center;
    position:relative;
}

.right-box-container > img {
    width: 810px;
    height:auto;
    position:absolute;
    right:0;
    bottom:0;
}

@media only screen and (max-width: 680px) {
    .right-box-container > img {
        width: 97vw;
    }
}

@media only screen and (max-width: 920px) {
    .right-box-container > img {
        display: none;
    }
}

@media only screen and (max-width: 1020px) {
    .right-box-container > img {
        width: 650px;
    }
}