body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
    color: #333;
}
h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}
button {
    padding: 12px 25px;
    font-size: 1.1em;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #3498db;
    color: white;
    transition: background-color 0.3s ease;
}
button:hover {
    background-color: #2980b9;
}
#advice {
    margin-top: 30px;
    font-size: 1.5em;
    font-weight: bold;
    color: #e74c3c;
}