.sprite {
    background-image: url('../images/spritesheet.png');
    background-repeat: no-repeat;
    display: block;
}

.sprite-mail {
    width: 25px;
    height: 25px;
    background-position: -5px -5px;
}

.sprite-open {
    width: 20px;
    height: 13px;
    background-position: -40px -5px;
}

.sprite-phone {
    width: 25px;
    height: 25px;
    background-position: -40px -28px;
}