body{
    max-width: 650px;
    margin: 40px auto;
    padding: 0 10px;
    font:  18px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    color: #FFFFFF;
}
h1, h2, h3 {
    line-height: 1.2;
}
body {
    color: #FFFFFF;
    background: #0A0A0A;
}

a:link {
    color: #FFFFFF;
}

a:visited {
    color: #FFFFFF;
}