It’s time for modern CSS to kill the SPANative CSS transitions have quietly killed the strongest argument for client-side routing. Routing logic, hydration code, loading spinners – all just to stitch together something that browsers already knew how to do natively. Modern browsers – specifically Chromium-based ones like Chrome and Edge – now support native, declarative page transitions. What we’re calling “modern CSS” here is shorthand for View Transitions, Speculation Rules, and a return to native browser features that were always designed to handle navigation, interaction, and layout. 🔄 Basic cross-page fade transitionWith just a few lines of CSS, you can trigger smooth visual transitions between pages.