<style> html, body { margin: 0; } </style> <div style="clip: rect(100px,1000px,1000px,100px); position:absolute"> <div style="filter: drop-shadow(50px 50px 20px red)"> <div style="width:256px; height:256px; border-radius:16px; overflow:hidden"> <div style="width:256px; height:256px; background-color:green;"></div> </div> </div> </div>