As per https://www.w3.org/TR/2005/WD-css3-background-20050216/#the-border-image and https://groups.google.com/a/chromium.org/forum/#!searchin/blink-dev/border-image/blink-dev/J7rvFkcn8TU/OtIcXTDDAQAJ we need now to explicitly use 'border-style: solid' in combination with -webkit-border-image for it to work correctly. Signed-off-by: Herman van Hazendonk <github.com@herrie.org>