html,
body {
    height: 100%;
    overflow-x: hidden;
    color: #333;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--background-color);
    font-family: Arial, Helvetica, sans-serif;
    counter-reset: heading;
}

main {
    max-width: 768px;
}

h1 {
    font-weight: bold;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

h2 {
    counter-increment: heading;
    position: relative;
    margin: 0.5rem 0 1rem 0;
    margin-left: 1.15rem;
    font-size: 1.2rem;
    font-weight: bold;
}

h2::before {
    position: absolute;
    top: 0;
    right: 100%;
    content: counter(heading) '.';
    margin-right: 0.2rem;
}

p {
    margin-bottom: 0.7rem;
}