body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #fff;
    color: #333;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    color: #fff;
    background-color: #007BFF;
}

.header-content {
    margin-left: 20px;
}

.app-icon img {
    width: 240px;
    height: 240px;
    border-radius: 10px;
}

h1 {
    font-size: 48px;
    margin: 0;
}

p {
    font-size: 18px;
}

section {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

h2 {
    font-size: 22px;
    margin-top: 0;
}

ol {
    padding-left: 20px;
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: #333;
    color: #fff;
}

/* Add media queries for mobile responsiveness */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
    }

    .app-icon img {
        width: 180px;
        height: 180px;
        margin-top: 20px;
    }

    .header-content {
        margin-left: 0;
        margin-top: 20px;
    }

    h1 {
        font-size: 48px;
    }

    p {
        font-size: 16px;
    }

    section {
        padding: 15px;
        margin-top: 10px;
    }

    h2 {
        font-size: 18px;
    }
}