body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    padding: 40px;
}

h1 {
    margin-bottom: 30px;
}

.grid {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

button {
    padding: 18px 30px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    background: #2563eb;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #1e40af;
}

.note {
    margin-top: 40px;
    color: #555;
}