body {
    color: #242424;
    background-color: #fafafa;
    margin: 1.25rem;
    max-width: 25rem;
}

h1 {
    display: none;
}

p, ul, li {
    margin: 0;
    padding: 0;
    line-height: 1.25rem;
    text-decoration: none;
    list-style: none;
}

div, ul {
    margin-bottom: 1.25rem;
}

a {
    color: #242424;
}

#chapters {
    text-decoration: none;
    opacity: 50%;
    transition: opacity .7s ease-in-out;
    font-size: 1.25rem;
}

#chapters:hover {
    opacity: 100%;
}

a:hover {
    text-decoration-thickness: 2px;
}