div.sprocket-mosaic .sprocket-readmore {
    font-size: 0;
    border: none;
    height: 0;
    margin: 0;
    padding: 0;
}
div.sprocket-mosaic .sprocket-readmore span:before {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    height: 100%;
    width: 100%;
    content: "";
}