body {
    background-color: #1a1a1a;
    color: #f5f5f5;
    font-family: 'Courier New', monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    width: 400px;
    max-width: 90%;
}

#chat-box {
    border: 2px solid #f5f5f5;
    padding: 10px;
    height: 400px;
    overflow-y: auto;
    margin-bottom: 10px;
    background-color: #111;
}

.message {
    margin: 5px 0;
}

.user {
    color: #8ae234;
}

.bot {
    color: #729fcf;
}

#user-input {
    width: 70%;
    padding: 5px;
}

#send-btn {
    padding: 5px 10px;
}