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HTML How to Make a Website Responsive Web Design and Testing Build a Three Column Layout

Posted by Asaf Harel
Asaf Harel
Courses Plus Student 857 Points

"nth-child" Pseudo-Class

I have recently watched this video (link attached) on which they introduced the "nth-child" pseudo-class. Now, inside the parentheses is written "4n"; however, if the "n" is an index (as I understand this), then I believe that they were supposed to write "3n+1" inside the parentheses, or else there will a bug once there will be 3 rows and more. Could this be right or should I just review this lesson again?

2 Answers

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

You're correct Asaf. This is noted in the Teacher's Notes section.

The "bug" really only happens when you have a taller caption come before a shorter caption in a given row. The next row is going to have problems. The first item in the next row won't float all the way to the left but it will stop when it hits the taller item from the row above.

If all of the items were guaranteed to have equal height then we wouldn't have to do any clearing at all. Here we have captions that are fluid width and are going to wrap differently and hence have different heights. A relatively short caption with big words is going to wrap to more lines than a caption with shorter words.

This also happens in the two column layout which to my knowledge doesn't have a correction yet.

I wrote more about it in this thread:
https://teamtreehouse.com/forum/3-column-layout-nth-clear-not-working

Asaf Harel
Asaf Harel
Courses Plus Student 857 Points

Thank you very much, plus I haven't known there is a "Teacher's Notes" section. P. S After I had seen the other thread, I realised immediately how much dedication you put in writing these answers, and I truly appreciate you for that and for your help.

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

You're very welcome.

Richard Duncan
Richard Duncan
5,568 Points
Richard Duncan
Richard Duncan
5,568 Points

There won't be a bug as such it may not target the elements that you're aiming for though. The two equations are different. Math was never my strong suit but as I understand it: -

4n is every 4th starting at 0, e.g. 4...8...12....

3n is every third starting at 1 e.g. 1...4...7...