Build an HTML photo showcase page with proper alt text, figures with captions, and an embedded video.
The goal of this project is to teach you how to handle images, captions, and embedded media in HTML. You will build a page that displays a small collection of images with proper alt text, captions, and one embedded video. Do not style the page; styling will be addressed in a later project. Focus here on the markup that decides how the media is loaded, described, and announced.