a.espa_banner_link {
    display: block;
    position: relative;
    width: calc(100% - 100px);
    margin: 0 0 0 auto;
}

@media screen and (max-width: 1280px) {
    a.espa_banner_link {
        display: block;
        position: relative;
        width: 100%;
        margin: 0 0 0 auto;
    }
}