I do not understand this question.

You've tried to do this:

const studentInfo = document.querySelectorAll ('student-info')

I can see 2 problems here:

• you have missed the semicolon from the end
• you have missed the dot from before the class name

Please note that if you are using querySelector, you can select based on tags, ids, classes, so you have to distinguish in the syntax. If you would use a function which is only capable of using class names, you could use the class name without the dot, because the compiler would know for sure that it has too look for a classname, not a tag name or id. An example to this would be getElementsByClassName('student-info')

Now you have to do something like this:

const studentInfo = document.querySelectorAll('.student-info');

I had tried with the dot also and the semi-column, but it still doesn't work.

I'm not sure what you are getting wrong, but as you can see, for me it worked:

Ok thanks, it worked without the space!