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 How to Make a Website Responsive Web Design and Testing Refactor the Layout

How do I 'clear the left side of every 4th list item in the gallery' inside the media query?

Am I missing something really obvious in this code?

css/main.css
a {
  text-decoration: none;
}

#wrapper {
  max-width: 940px;
  margin: 0 auto;
}

#logo {
  text-align: center;
  margin: 0;
}

h1, h2 {
  color: #fff;
}

nav a {
  color: #fff;
}

nav a:hover {
  color: #32673f;
}

h1 {
  font-family: β€˜Changa One’, sans-serif;
  font-size: 1.75em;
  font-weight: normal;
}

img {
  max-width: 100%;
}

#gallery {
  margin: 0;
  padding: 0;
  list-style: none;
}

#gallery li {
  float: left;
  width: 45%;
  margin: 2.5%;
  background-color: #f5f5f5;
  color: #bdc3c7;
}

nav ul {
  list-style: none;
  margin: 0 10px;
  padding: 0;
}

nav li {
  display: inline-block;
}

nav a {
  font-weight: 800;
  padding: 15px 10px;
}

.profile-photo {
  display: block;
  margin: 0 auto 30px;
      max-width: 150px;
  border-radius: 100%;
}

.contact-info {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9em;
}

.contact-info a {
  display: block;
  min-height: 20px;
  background-repeat: no-repeat;
  background-size: 20px 20px;
  padding: 0 0 0 30px;
  margin: 0 0 10px;
}

@media screen and (min-width: 480px) {

  #gallery li {
    width: 28.3333%;
  }

  #gallery li: nth-child (4n) {
    clear: left;
  }
}

3 Answers

Christopher van Ruitenbeek
Christopher van Ruitenbeek
13,705 Points

Remove the space between li and :nth-child. And remove the space between :nth-child and (4).

Then it should work without problem.

Thank you Christopher! It worked! I did not realize it was so space sensitive.

Christopher van Ruitenbeek
Christopher van Ruitenbeek
13,705 Points

Sometimes it is 'space sensitive'.

For instance:

p .example {
 /* stands for the class INSIDE the p element */
}

p.example {
/* stands for the P element that HAS the class "example" */
}

With :nth-child and other elements/pseudo elements, it is more strict. As you saw, it just doesn't work with a space ;).

Good luck on your next challenges.

MY EFFING GOD - I had the same issue I was about to throw my computer out the window! LOL