The border-image-width CSS property defines the offset to use for dividing the border image in nine parts, the top-left corner, central top edge, ... ... <看更多>

I know this is kind of cheating, but if you could have nested elements then the parent could have a background and the child could mask of ... ... <看更多>

CSS :border-image. GitHub Gist: instantly share code, notes, and snippets. ... <看更多>