body {
    font-family: Nunito, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}

nav {
    text-align: center;
    margin: 1em 0;
    font-weight: bolder;
    font-size: larger;
}

nav a {
    color: #333;
    text-decoration: none;
    margin: 0 1em;
}

nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 1em;
}

section {
    margin-bottom: 2em;
    text-align: justify;
    font-size: larger;
}

section:nth-child(1) {
    text-align: center;
}