i am nearly finishing my course but suck at 92% now
could you please ans my question?
Q1:I don’t quite sure what pix mean. For example, every time I write px, I have to refresh it to see the result how should i understand px to get better sense of it?
Q2: I am not so sure what clear property mean, as I don’t see much differce after refreshing
Q3: I don’t quite understand what rel mean? Is it considered as a name of the link of href
Q4: in previous lesson, we learn div as a tool to group things and class= sth is considered as a name of selector, but div class"row" mean the same thing ? Also, I am not so sure the meaning of col-md-4 mean as well.