#life table {
    border-collapse: collapse;
    font-family: monospace;
    font-size: 0;
}

#life td, #life tr {
    padding: 0;
    margin: 0;
    border-width : 0;
}

#life td {
    width: 4px;
    height: 4px;
}

.alive {
    background-color: #50C878;
}

.dead {
    background-color: #eee;
}

.hidden {
    display: none;
}