main {
    position: relative;
    background: #a33;
}

#next-concert {
    position: absolute;
    bottom: 4%;
    height: 20ex;
    width: 10em;
    text-align: center;
    background: no-repeat center/contain url('calendar.svg');
}

#next-concert a {
    position: relative;
    top: 48%;
    color: #eee;
    text-decoration: none;
}

#next-concert a #day {
    font-size: 180%;
    font-weight: bold;
}