https://developer.mozilla.org/de/docs/Web/CSS/Reference/Properties/mask-border
mask-border - CSS | MDN
Die mask-border CSS Kurzschreibweise ermöglicht es Ihnen, eine Maske entlang des Randes eines Elements zu erstellen.
mask border cssmdn
https://caniwebview.com/features/mdn-css-property-maskborderslice/
Can I WebView… CSS property: mask-border-slice
CSS property: mask-border-slice
css propertymask borderslice
https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties/mask-border
mask-border - CSS | MDN
The mask-border CSS shorthand property lets you create a mask along the edge of an element's border.
mask border cssmdn