Sure, here's an example implementation of a chat input box using BaseWeb UI: ```jsx import * as React from 'react'; import { Input, Button, ButtonGroup } from 'baseui'; function ChatInputBox() { const [message, setMessage] = React.useState(''); const textAreaRef = React.useRef(null); // This function will resize the text area to fit its content up to a maximum of 96px. function handleTextAreaChange(event) { const target = event.target; target.style.height = 'auto'; target.style.height = `${Math.min(target.scrollHeight, 96)}px`; setMessage(target.value); } function handleInsertEmojiClick() { // TODO: Implement emoji insertion logic. } function handleInsertImageClick() { // TODO: Implement image insertion logic. } function handleSendMessageClick() { // TODO: Implement message sending logic. } return ( ); } ``` In this implementation, we're using the `Input` component from BaseWeb with the `multiline` prop to create a multi-line input area. We're also setting the `minHeight` and `maxHeight` styles to 48px and 96px respectively, and adding a `resize: none` style to prevent the user from resizing the text area. We're also using the `overrides` prop to customize the `Input` component's style. To automatically resize the text area as the user types, we're using the `handleTextAreaChange` function to set the `height` style of the text area based on its content's height up to a maximum of 96px. We're also using the `inputRef` prop to get a reference to the text area so that we can use it in this function. Finally, we're using the `ButtonGroup` component from BaseWeb to group the emoji and image insertion buttons together, and we're using the `Button` component for all three buttons. We're also defining placeholder functions for handling the emoji insertion, image insertion, and message sending logic.