body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.chat-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

.chat-messages {
    height: 300px;
    overflow-y: auto;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.message-box {
    display: flex;
    justify-content: space-between;
}

.message-input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#submit-button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #007bff;
    color: #fff;
    cursor: pointer;
}