There are multiple properties to choose from:
clip-path: inset(20px) | Cuts 20px from sides
clip-path: circle(50% at 50% 50%) | 🟡
clip-path: ellipse(50px 60px at 0 10% 20%)| ⬬
clip-path: polygon(50% 0, 0 100%, 100% 100%) | 🔺
clip-path: path() | Define SVG path to clip to.