Ten CSS properties that can replace common JavaScript workarounds

A developer review highlights ten modern CSS properties — including aspect-ratio, backdrop-filter, clip-path, and scroll-behavior — that now handle tasks previously requiring JavaScript. Problems like maintaining image proportions, blurring backgrounds, creating non-rectangular shapes, and smooth-scrolling to anchors once demanded resize listeners, canvas hacks, and scroll handlers. These CSS features are handled natively by the browser's layout and compositor engines, which can improve performance by keeping work off the main JavaScript thread. The article groups the properties by the specific JavaScript patterns they replace, rather than listing them in isolation. The broader point is that modern CSS has quietly closed many gaps that once made JavaScript workarounds necessary.