body{
    font-family: Arial;
    background:#f2f2f2;
}

.chat-box{
    width:500px;
    margin:40px auto;
    background:#fff;
    padding:20px;
    border-radius:10px;
}

#chat{
    height:400px;
    overflow-y:auto;
    border:1px solid #ccc;
    padding:10px;
    margin-bottom:10px;
}

.user{
    color:blue;
    margin:10px 0;
}

.bot{
    color:green;
    margin:10px 0;
}

#message{
    width:78%;
    padding:10px;
}

#send{
    padding:10px 20px;
}