I hope this issue is correctly created. So, I'm using Apache NetBeans 11.0 for my webdevelopment. When I see red lines, I want to go ahead and fix the code. However, in one .css file I see red lines even under correct code.
For example, I have this CSS:
According to W3C CSS validator, the unicode-range line is correct. However, NetBeans puts a red line underneath it with the error (example of the error of the red line underneath the first +: "unexpected token PLUS found")
As far as I know, this could be maybe because of NetBeans using a too low CSS version but I'm not 100% sure. See the attachment for a better view of what I mean.