Achieving a Blur Effect with Clip-Path Cutouts

The devlog-ist/landing project focuses on creating an engaging landing page experience. A recent enhancement involved adding a blur effect around a tour target element to draw the user's attention. The Challenge Creating a visually appealing and performant blur effect that highlights a specific element during a tour or guide. Previous attempts using z-index elevation and stacking contexts proved problematic, leading to visual artifacts and rendering issues. The Solution The chosen approach utilizes a full-screen backdrop-filter blur div combined with a dynamic, evenodd polygon clip-path . This method effectively excludes the target area from the blur, creating a focused highlight. The JavaScript code dynamically computes the target bounds on each step change to ensure accurate clipping. // Illustrative example (Go-like syntax) func updateClipPath ( targetBounds Rectangle ) string { polygon := "polygon(evenodd, " polygon += fmt . Sprintf ( "%fpx %fpx, " , 0 , 0 ) polygon += fmt . Sprint