html {
    font-family: arial, sans-serif;
    background: #f5f5f5;
    color: #424242;
}

main {
    display: flex;
    justify-content: center;
    padding: 20px;
}

main div {
    max-width: 800px;
    left-margin: auto;
    right-margin: auto;
}

main div .header {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

main div .header img {
    width: 50px;
}

main div .header h1 {
    text-align: center;
    font-size: 20px;
}

main div h2 {
    font-size: 16px;
}