#chat {
    height: 300px;
    overflow-y: scroll;
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
}

#message {
    width: 100%;
    margin-bottom: 10px;
}

.message-client {
    color: green;
}

.message-server {
    color: blue;
}