The value between
</kbd> is grey and it seems to be disabled: grey
I remember that it looked better (probably the text was black = more visible) in the past, but now it looks like this:
The problem appears at least on this website and on stackoverflow.
I tested it using 3 different browsers:
- Chrome 49
- IE 11 (+ compatibility mode: 9 & 10)
- Firefox 39
but the problem appears on all of them.