Font size change i even tried others examples

Tell us what’s happening:

so i have been using examples and such with my code and i am still not understanding it at all i have used about 10 examples so far and im not getting it.
can somebody show me their code so i can get what i am missing i am at 100 zoom and all just need the code for it to work so i can understand where i am messing up at thanks, joseph

Your code so far

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

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

<p class="red-text">Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36.

Link to the challenge:
https://www.freecodecamp.org/challenges/change-the-font-size-of-an-element

<style>
  .red-text {
    color: red;
  }p kitty ipsum text  {font-size: 16px;} <!--- ON THIS LINE IT SHOULD ONLY BE P NOT P KITTY IPSUM TEXT -->
</style>

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

<p class="red-text">Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>