body {
    min-height: 100vh;
}

a {
    text-decoration: none;
}

@media (max-width: 999px) {
    header {
        text-align: center;
        padding: 30px;
    }

    main {
        width: 500px;
    }
}

@media (min-width: 1000px) {

    header {
        position: fixed;
        right: 2vw;
        top: 3vh;
    }

    #content {
        width: 400px;
        position: fixed;
        left: 10vw;
        bottom: 10vw;
    }
}