.acc {
    font-size: 20px;
    color: white;
    height: 100px;
    width: 0px;
}
body {
    background: black;
}
#x {
    background: #f00;
}
#y {
    background: #0f0;
}
#z {
    background: #00f;
}
#alpha {
    background: #ff0;
}
#beta {
    background: #0ff;
}
#gamma {
    background: #f0f;
}