Mask ImagePaint a squircle mask on an element.Variables VariableType--squircle-modemask-image | background Usage .squircle { mask-image: paint(squircle); --squircle-mode: mask-image; } We advise you to use a no-repeat mask-image to avoid certain mini visual bugs that might occur on slow devices when resizing a squircle (only on browsers not compatible with CSS.paintWorklet). .squircle { mask-image: paint(squircle); --squircle-mode: mask-image; @supports not (mask-image: paint(squircle)) { mask-repeat: no-repeat; } }By Skyleen. The source code is available on GitHub.