body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: white;
    padding: 50px 20px;
}

.btn {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    color: white;
    background-color: #007bff;
    text-decoration: none;
    border-radius: 5px;
}

#features {
    padding: 50px 20px;
}

.feature {
    margin: 20px 0;
}

footer {
    background-color: #222;
    color: white;
    padding: 10px;
}