body {
    background-color: #0F0F0F;
    color: #00FF00;
    text-align: center;
    font-family: Consolas, monaco ,monospace;
}
a {
    color: inherit;
}
.header {
    font-size: 4em;
}
.subheader {
    font-size: 1.25em;
}
.subsubheader {
    font-size: 0.75em;
}