body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.chat-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.chat-header {
    background-color: #007bff;
    color: #fff;
    padding: 10px;
    text-align: center;
}

.chat-messages {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
    background-color: #e9ecef;
}

.chat-messages pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
}

.chat-messages .label {
    color: red;
    font-weight: bold;
}

.chat-input {
    padding: 10px;
    background-color: #fff;
    border-top: 1px solid #ddd;
}

.chat-input textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: none;
}

.chat-input button {
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.chat-notice {
    padding: 10px;
    text-align: center;
    background-color: #fff;
    border-top: 1px solid #ddd;
}