.status-icon {
    width: 128px;
    height: 128px;
    display: block;
}

.status-icon-false {
    background-image: url("/img/red.png");
}

.status-icon-true {
    background-image: url("/img/green.png");
}

.status-icon-unknown {
    background-image: url("/img/yellow.png");
}