I seem to experience the same problem as Sandracai28

Tell us what’s happening: I honestly do not know what the problem is. I have done according to what the video instructs but still no luck. What could be the problem???

Your code so far

  body {
    background-color: #FFFFFF;
  .green {
    background-color: hsl(120, 100%, 50%);
  .cyan {
    background-color: hsl(180, 100%, 50%);
  .blue {
    background-color: hsl(240, 100%, 50%);
  div {
    display: inline-block;
    height: 100px;
    width: 100px;
<div class="green"></div>
<div class="cyan"></div>
<div class="blue"></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.0; rv:52.0) Gecko/20100101 Firefox/52.0.

Link to the challenge:

Your code is passing for me in Firefox and Chrome.

  1. If you have a dark mode extension install you might have to turn it off.

  2. Try using the latest version of Firefox, or try Chrome.

Thanks so much for the info, you saved my day.