style.css

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

#chat-container {
    width: 60%;
    max-width: 800px;
    border: 1px solid #ddd;
    padding: 20px;
    background-color: white;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
}

#chat-box {
    height: 400px;
    overflow-y: auto;
    border: 1px solid #ccc;
    margin-bottom: 10px;
    padding: 10px;
    background-color: #f9f9f9;
}

.message {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.user .avatar, .model .avatar {
    width: 40px;
    height: 40px;
    border-radius: 20px;
    margin-right: 10px;
}

.user {
    justify-content: flex-end;
}

.user .message-text {
    background-color: #dcf8c6;
    padding: 8px 12px;
    border-radius: 15px;
}

.model {
    justify-content: flex-start;
}

.model .message-text {
    background-color: #e5e5ea;
    padding: 8px 12px;
    border-radius: 15px;
}

.bot {
    background-color: #e5e5ea;
    align-self: flex-start;
}

.error {
    background-color: #ffdddd;
    color: #d8000c;
    align-self: center;
}

#user-input {
    width: calc(100% - 80px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#send-button {
    width: 60px;
    height: 38px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#send-button:hover {
    background-color: #0056b3;
}

#model-selector-container {
    margin-bottom: 10px;
}

#model-selector {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
}