I am not sure that I am correct with the Linear Gradient percentage settings
.bb2b {
width: 100%;
height: 100%;
background: linear-gradient(var(–building-color2)0% 6%, var(–window-color2)6% 9%)
}
Add a linear-gradient to .bb2b that uses --building-color2 from 0% to 6% and --window-color2 from 6% to 9%.
**Your browser information:**
User Agent is: <code>Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.0.0 Safari/537.36</code>
**Challenge:** Step 51
**Link to the challenge:**
https://www.freecodecamp.org/learn/2022/responsive-web-design/learn-css-variables-by-building-a-city-skyline/step-51