body {
    margin: 40px auto;
    max-width: 650px;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 18px;
    color: #444;
    padding: 0 10px;
    text-align: justify;
}

h1,
h2,
h3 {
    line-height: 1.2;
}

p {
    line-height: 1.6;
}