Learn CSS Variables by Building a City Skyline - Step 78

Tell us what’s happening: I have followed the following instruction word for word to the best of my knowledge, but I can’t seem to pass step 78. what could be wrong?

Your code so far

.fb1c {
  width: 100%;
  height: 80%;
  background: repeating-linear-gradient(
      90deg,
      var(--building-color4),
      var(--building-color4) 10%,
      transparent 10%,
      transparent 15%
    ),
    repeating-linear-gradient(
      var(--building-color4),
      var(--building-color4) 10%,
      var(--window-color4) 10%,
      var(--window-color4) 90%,
    )
}

**Below is the instruction: **
**Add a repeating-linear-gradient to .fb1c below the **
**one that’s there; use your --building-color4 from **
**0% to 10% and --window-color4 from 10% and **
90%. This will fill in behind the gradient you
added last.

Your browser information:

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Challenge Information:

Learn CSS Variables by Building a City Skyline - Step 78

remove the comma after the last color

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