body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    /* background-color: #f4f4f4; */
}

header {
    background-color: #333;
    padding: 20px;
    text-align: center;
    color: white;
}

.logo {
    max-width: 150px;
}

main {
    padding: 20px;
}

.intro {
    text-align: center;
    margin-bottom: 30px;
}

.qr-codes {
    /* display: flex; */
    justify-content: space-around;
    flex-wrap: wrap;
}

.qr-code {
    text-align: center;
    margin: 10px;
}

.qr-code img {
    max-width: 150px;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}