Netbeans show css variables as error

问题

My Netbeans IDE show me error when I'm using css variables. For example, this lines of code will return an error:

:root {
    --main-bg-color: #dad66f;
}

.title {
    color: var(--main-bg-color);
}

I found this solution online: https://bugzilla-attachments-262769.netbeans.org/bugzilla/attachment.cgi?id=160370 But I don't know how to install this patch. Anyone have idea how I can stop showing this code as an error?

Thanks :)

来源：https://stackoverflow.com/questions/49225680/netbeans-show-css-variables-as-error