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

header {
    padding: 40px;
}

.hero {
    padding: 30px;
}

button {
    padding: 10px 20px;
    cursor: pointer;
}

.architecture {
    margin: 30px auto;
    width: 300px;
    padding: 20px;
}

footer {
    margin-top: 50px;
    padding: 20px;
}