body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f0f0;
    margin: 0;
}

.container {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
}

h1 {
    margin-top: 0;
}

input {
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-right: 0.5rem;
}

button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    background-color: #007bff;
    color: white;
    cursor: pointer;
}

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

#message {
    margin-top: 1rem;
    font-weight: bold;
}