body, html {
    height: 100%;
    min-width: 100%;
    background-color: #f5f5f5;
}

/*body{*/
/*    display: flex;*/
/*    flex-direction: column;*/
/*    justify-items: center;*/
/*}*/

nav {
    display: flex;
    flex-direction: row;
    background-color: #ffffff;
}
nav > ul {
    font-size: 2em;
}