body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    color: #333;
}

section {
    background: white;
    padding: 15px;
    margin: 10px auto;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

button {
    background-color: #007BFF;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}