body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 20px;
}
.chat-container {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    width: 400px;
    margin: auto;
}
.chat-box {
    height: 300px;
    overflow-y: auto;
    border: 1px solid #ddd;
    padding: 10px;
    background: #fafafa;
}
.user-msg { text-align: right; }
.bot-msg { text-align: left; color: #333; }