body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    nav {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3.5em;
        color: white;
        background-color: black;
        a {
            position: absolute;
            color: white;
        }
        a:nth-child(1) {
            padding: 1em;
        }
        a:nth-child(2) {
            right: 0;
            padding: 1em;
        }
    }
    main {
        margin-top: 3.5em;
        margin-bottom: 1em;
    }
    footer {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background-color:black;
        color:white;
        text-align: center;
        font-size: 12px;
        padding: 2px;
    }
}