It's HTML imagemaps from the 90s, when we could not style buttons and navbars where GIFs with links in the right places. Browsers still have the code to render

It's HTML imagemaps from the 90s, when we could not style buttons and navbars where GIFs with links in the right places. Browsers still have the code to render them. https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/map https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/... https://caniuse.com/mdn-html_elements_map https://caniuse.com/mdn-html_elements_map