.at-image-desk-mobi
{
    text-align: right;
    position: relative;
    min-height: 550px; 
}
.at-image-desktop{
    background: url(./images/bg-image-desktop-at.png) no-repeat center center;
    width: 616px;
    background-size: cover;
    height: 550px;
    overflow: hidden;
    padding: 54px 61px 0 40px;
    position: absolute;
    bottom: 0;
    left: 0;
}
.at-image-mobile {
    background: url(./images/bg-image-mobile-at.png) no-repeat center center;
    position: absolute;
    bottom: 0;
    right: 25px;
    height: 342px;
    width: 262px;
    overflow: hidden;
    padding-top: 50px;
    padding-right: 53px;
}