Can anyone help me understand this!
Hey, welcome to the forums!
I believe it’s asking you which one of those three rulesets shown would you want to use on an element if you wanted that element to have a maximum height of 1500px. So it wants you to select one of the four classes that, if applied to an element, would have that effect.
Hope that helps 
1 Like
the one which is more specific than others r8 ?
They all have the same level of specificity, but only one applies the right value for the height (1500px) that’s wanted
ohh , i got it :"D
thank u
1 Like
No problem, happy coding!
1 Like