I couldn't tell if she was trying to ask about the Box Model or the Grid System as she couldn't clarify. I ended up assuming she was talking about the Grid System as she hesitated with a shaky "yes". For the second question, it would've been more clear if Wayfair changed the script to "In terms of the CSS layout, what is the purpose of setting the display to inline-block?". Similar to the second question, the third could've been reworded as well, however, it felt like the recruiter just wanted to get the interview over with.