“It’s actually pretty incredible what HTML and CSS alone can achieve.”
Modern CSS can handle accordions, tabs, form validation, theme switching, and smooth animations without a single line of JavaScript. The browser compositor runs CSS animations on a separate thread at 60fps while your bloated React app chokes the main thread. Security conscious users who disable JavaScript still get a working site. The web platform caught up years ago. Most developers just never noticed because they were too busy npm installing the universe.