I have this code, which should pass the tests:

<style>
  .red-text {
    color: red;
  }
  p{
    font-size: 16 px;
  }
</style>

<h2 class="red-text">CatPhotoApp</h2>

<p class="red-text">Purr jump eat the grass</p>
<p>Purr jump eat the grass</p>

It still won't pass. I'm using firefox.

Have you checked out FreeCodeCamp's help channel on Gitter?

This is not a bug but wrong syntax. The issue is where you're setting the font-size. You're setting it to 16 px where it should be 16px.

@drk7891 Is correct. Thanks and happy coding!

Using Chrome ver 49 (up-to-date) and I cannot pass, I fail at the last check mark: Give elements with the p tag a font-size of 16px. Browser and Text zoom should be at 100%.

.red-text { color: red; font-size: 16px; }

CatPhotoApp

Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.

Purr jump eat the grass rip the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched.