i have followed the given intentions on step 108. Building a city skyline using css variables and im still fining it difficult to go to tge next step. Bellow is the listed code for .fb6
.fb6 {
width: 9%;
height: 38%;
background-color: var(–building-color3);
background: repeating-linear-gradient(
90deg,
var(–building-color3),
var(–building-color3) 10%,
transparent 10%,
transparent 30%
)
repeating-linear-gradient(
var(–building-color3),
var(–building-color3) 12%,
var(–window-color3) 12%,
var(–window-color3) 44%
)
}