Trying to change the colors of the scrollbar on this iframe isn't working. It seems to be because it is an iframe, because this demo on webkit scrollbars breaks when a div is changed to an iframe. So, is it something that can't be done with CSS in this case? I tried putting the webkit CSS on the page in the iframe, and that didn't work either.
iframe::-webkit-scrollbar {
background-color: black; } <iframe src="https://www.moonwards.com/2016/02/04/test-test.html" width="100%" style="border:none;" ></iframe>