html, body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  overflow: hidden;
}

main {
    margin: auto;
    max-width: 80ch;
    width: 100%;
    padding: 1rem;
    margin-top: 12vh;
    font-family: "Consolas", "Lucida Console", monospace;
    margin-bottom: 20vh;
    line-height: 1.2em;
}

#fn {
    font-family: "Consolas", "Lucida Console", monospace;
}

.extra2 {
    display: none;
}

a:link {
    color: blue;
    text-decoration: none;
    transition: 0.3s;
}

a:hover {
    background-color: yellow;
}

a:visited {
    color: purple;
    text-decoration: none;
}

@media screen and (max-aspect-ratio: 1/1) {
    html, body {
        overflow-x: hidden; 
        overflow: scroll;
    }

    main {
        padding: 4vw;
        margin: 3vh auto;
        width: 90vw;
        max-width: 600px;
    }

    p {
        font-size: 1rem;
        line-height: 1.2;
    }

    h4 {
        font-size: 1.3rem;
    }

    h3 {
        font-size: 1.8rem;
        text-align: center;
    }

    .extra {
        display: none;
    }

    .extra2 {
        display: block;
    }

    #info {
        text-align: center;
    }
}