Use a CSS Linear Gradient to Create a Striped Element: commenting out previous values fails test

Tell us what’s happening:
I’m not stuck, I just noticed that if I comment out the previous values instead of deleting them then the tests fail even though it looks right, why is that?

Your code so far


    border-radius: 20px;
    width: 70%;
    height: 400px;
    margin:  50 auto;
    background: repeating-linear-gradient(
      yellow 0px,
      /*blue*/yellow 40px,
      /*green*/black 40px,
      /*red*/black 80px



Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0.

Link to the challenge:

i also did it in a same way , i think its happened because of comment , may be it go through the comments also to check whether your answer is correct or not.