Step keeps saying code is wrong but I know its not

I’m in the “Colors by Building a set of colored markers” section of the curriculum on step 16. when I enter the code and run the test it’s coming back as incorrect but when i ran it through a different code tester it was correct. take a look at my screenshot. is it just me or is the editor not testing this correctly?

I believe your code is incorrect… an HTML Element should only have one “class” declaration… but that single declaration can contain multiple classes.

you can give multiple classes to the same element writing the classes separated by a space like so class="class1 class2"