html *
{
    font-family: Courier New;
    line-height: 150%;
}
h1 {
    font-size: 4em;
    font-weight: bold;
}
a {
    text-decoration:none;
}
.big {
    font-size: 2em;
}
.centered {
    top: 50%;
    left: 50%;
    position: absolute;
    transform: translateY(-50%) translateX(-50%);
}