body {
    font-family: sans-serif;
    margin: 0;
    background-color: #f0f0f0;
}

#chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-left: 1px solid #ccc;
    border-right: 1px solid #ccc;
}

#header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    border-bottom: 1px solid #ccc;
    background-color: #f9f9f9;
}

#header h1 {
    margin: 0;
    font-size: 1.5em;
}

#chat-window {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
}

#message-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

#message-list li {
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
}

#message-list .user-message {
    background-color: #dcf8c6;
    align-self: flex-end;
}

#message-list .bot-message {
    background-color: #f1f0f0;
    align-self: flex-start;
}

#input-container {
    display: flex;
    padding: 20px;
    border-top: 1px solid #ccc;
}

#message-input {
    flex-grow: 1;
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 10px;
    font-size: 16px;
}

#send-button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    margin-left: 10px;
    cursor: pointer;
}