body {
    font-family: Arial, sans-serif;
}

.chat-container {
    width: 400px;
    margin: auto;
    margin-top: 20px;
    background-color: #f4f4f4;
    border: 1px solid #ddd;
    padding: 20px;
    border-radius: 5px;
}

#chat-box {
    height: 300px;
    border: 1px solid #ddd;
    margin-bottom: 10px;
    padding: 10px;
    overflow-y: auto;
    background-color: #fff;
}

#user-input {
    width: calc(100% - 90px);
    padding: 10px;
}

#send-button {
    width: 80px;
    background-color: #5cb85c;
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
}

#send-button:hover {
    background-color: #4cae4c;
}