html {
    font-family: Arial, Helvetica, sans-serif;
    max-width: 70ch;
    padding: 3em 1em;
    margin: auto;
    line-height: 1.75;
    font-size: 1.25rem;
}

a {
    text-decoration: none;
    color: blue;

}

a:visited {
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
}