Learn CSS Variables by Building a City Skyline - Step 85

Tell us what’s happening:
It keeps saying I should give the .fb2-window elements a background-color of --window-color3 which I’ve done. The code just couldn’t pass. Any help?

Your code so far
.fb2-window {
width: 22%;
height: 100%;
background-color: --window-color3;
}

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Challenge: Learn CSS Variables by Building a City Skyline - Step 85

Link to the challenge:

You have to that put like this, Don´t forget the (var).
.fb2-window {
width: 22%;
height: 100%;
background-color: var(- -window-color3);
}

Your code so far
.fb2-window {
width: 22%;
height: 100%;
background-color: --window-color3;
}