We'll explore how to overlay text or small images on top of a video element in Daily, a video calling SDK for developers. To do this, we first need to arrange and stack elements with CSS. We set the position property to relative for the parent container and absolute for child elements like the name tag, allowing us to control their layout. Then, we use the z-index property to stack our elements, positioning them in order of importance. Next, we'll pass participant names as props from the Daily call object to a React component, displaying them on top of video streams. We create a custom React component called Tile that displays each participant's name and other information. By using CSS and React, we can customize the look and feel of Daily calls, adding features like text overlays or small images to enhance user experience.