For a long time web components generally built on four standards: - Custom HTML elements - Shadow DOM - HTML imports - HTML templates https://korban.n

For a long time web components generally built on four standards: - Custom HTML elements - Shadow DOM - HTML imports - HTML templates https://korban.net/posts/elm/2018-09-17-introduction-custom-elements-shadow-dom/ https://korban.net/posts/elm/2018-09-17-introduction-custom-... Eventually it became clear some browsers were not going to implement and the design of HTML imports was better handled be ES modules. https://webmasters.stackexchange.com/questions/127482/on-what-specific-grounds-were-html-imports-rejected-deprecated-and-removed https://webmasters.stackexchange.com/questions/127482/on-wha...