.img-wrapper {
    position: relative;
}

.img-overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 3%;
    /*text-align: center;*/
    text-align: right;
}

.img-overlay:before {
    content: ' ';
    display: block;
    /* adjust 'height' to position overlay content vertically */
    /*height: 50%;*/
    height: 80%;
}