* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f4f6;
    color: #1f2937;
    text-align: center;
}

header {
    background: #f48120;
    color: white;
    padding: 50px 20px;
}

main {
    max-width: 700px;
    margin: 40px auto;
    padding: 30px 20px;
    background: white;
    border-radius: 12px;
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    background: #2563eb;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

#message {
    color: #15803d;
    font-weight: bold;
}

footer {
    padding: 20px;
    color: #6b7280;
}