Learn CSS Variables by Building a City Skyline - Step 78

Tell us what’s happening:

I’m really confused on why the gradients i added are not working.

Your code so far

<!-- file: index.html -->

/* file: styles.css */
/* User Editable Region */

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

/* User Editable Region */

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Challenge Information:

Learn CSS Variables by Building a City Skyline - Step 78

you should not add the 90deg and you are missing spaces