#chat-window {
    width: 100%;
    max-width: 500px;
    height: 400px;
    overflow-y: scroll;
    border: 1px solid #ccc;
    padding: 10px;
    background: #f9f9f9;
    font-family: monospace;
}

#chat-messages {
    height: 80%;
    overflow-y: auto;
}

#chat-input {
    width: 60%;
    padding: 5px;
    margin-right: 5px;
}

#chat-file {
    margin-top: 10px;
}