@font-face {
    font-family: "Fira Code";
    src: url('FiraCode-VariableFont_wght.ttf') format('truetype');
    font-weight: normal;
}

body {
    font-family: 'Fira Code';
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    text-align: left;
    font-size: 18px;
    line-height: 1.5;
}

.nav a {
    color: black;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
}

.nav a:hover {
    color: blue;
    text-decoration: underline;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

p {
    line-height: 1.3;
}

h3 {
    margin-top: 0.5rem;
    margin-bottom: 0.2rem;
}

h4 {
    margin-top: 0.1rem;
    margin-bottom: 0.2rem;
}