body {
    font-family: 'Arial', sans-serif;
    background: #f0f2f5;
    text-align: center;
}
.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.chatbot {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 300px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}