Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS CSS Selectors Advanced Selectors :nth Pseudo-Class Challenge

Ruiqi Mao
Ruiqi Mao
16,675 Points
Posted by Ruiqi Mao
Ruiqi Mao
16,675 Points

nth-child

The task is asking to select the 4th img, then every third img, I don't know why I cannot pass this test; https://teamtreehouse.com/library/css-selectors/advanced-selectors/nth-pseudoclass-challenge

Here's my code:

@media (min-width: 607px) { img:nth-child(3n+4) { float: left; clear: left; } }

style.css 
/* Write the CSS in the media query below */

@media (min-width: 607px) {
  img:nth-child(3n+4) {
    float: left;
    clear: left;
  }
}
index.html 
<!DOCTYPE html>
<html>
<head>
    <title>Selectors</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="page.css">
  <link rel="stylesheet" href="style.css">
</head>
<body>
    <img src="thumb-forest.jpg" alt="">
    <img src="thumb-resort.jpg" alt="">
    <img src="thumb-trees.jpg" alt="">
    <img src="thumb-falls.jpg" alt="">
    <img src="thumb-view.jpg" alt="">
    <img src="thumb-sunset.jpg" alt="">
    <img src="thumb-lake.jpg" alt="">
    <img src="thumb-beach.jpg" alt="">
    <img src="thumb-bay.jpg" alt="">
    <img src="thumb-peaks.jpg" alt="">
    <img src="thumb-falls.jpg" alt="">
    <img src="thumb-resort.jpg" alt="">
</body>
</html>

1 Answer

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Task 1 and 2 should be different CSS rules.

The rule for task 1 that creates the floats should be completely different from the rule created in task 2 that clears them. The task 1 rule should remain as it was at the end of task 1.

It looks like you either modified or replaced the task 1 rule when you made the one for task 2.