This example presents a schedule of mathematics seminars, listing dates, speakers, and talk titles in an HTML table. The table includes expandable accordion panels for details and external links to videos and reference materials. It uses a CSS tab interface to switch between semesters, with JavaScript-free tab switching via the `:checked` pseudo-class and radio inputs. The page relies on HTML tables, the `details` analogy through custom accordion buttons, and styles from inline `<style>` blocks for layout and interaction.