body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    padding: 20px;
}

header {
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #ccc;
}

h1 {
    color: #333;
}

p {
    color: #777;
}

textarea {
    width: 100%;
    height: 200px;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    margin-top: 20px;
    font-size: 16px;
}

.controls {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin: 20px 0;
}

label {
    margin-right: 10px;
}

select {
    width: 200px;
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 16px;
}

#chatDisplay {
    background-color: #fff;
    border-radius: 5px;
    border: 1px solid #ccc;
    padding: 20px;
    margin-top: 20px;
    height: 200px;
    overflow-y: scroll;
}