Css html issue about .red-text

Tell us what’s happening:

Hi everyone, I’m new here just started. I am stuck on this piece of code. Anyone with suggestions?
Thanx in advance
Your code so far

  .red-text {
    color: red;

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

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Linux; Android 7.0; SM-A520F Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.158 Mobile Safari/537.36.

Link to the challenge:

The code you posted should pass the tests. You may need to refresh your page and attempt to run the tests again. Can you tell us which tests are not passing?

Thanx for answer me! I read in other posts it may be cause I am using my mobile phone instead of my laptop?
Thx in advance.