Why .foolow-btn giving errror?

Tell us what’s happening:

Your code so far


<style>
body {
  font-family: Arial, sans-serif;
}
header {
display:flex;
}
header .profile-thumbnail {
  width: 50px;
  height: 50px;
  border-radius: 4px;
  display:flex;
}
header .profile-name {
  display:flex
;
  margin-left: 10px;
}
header .follow-btn {
display:flex;
  margin: 0 0 0 auto;
}
header .follow-btn button {
  border: 0;
  border-radius: 3px;
  padding: 5px;
  display:flex;
}
header h3, header h4 {
display:flex;
  margin: 0;
}
#inner p {
  margin-bottom: 10px;
  font-size: 20px;
}
#inner hr {
  margin: 20px 0;
  border-style: solid;
  opacity: 0.1;
}
footer {
display:flex;
}
footer .stats {
  display:flex;

  font-size: 15px;
}
footer .stats strong {
  font-size: 18px;
  display:flex;
}
footer .stats .likes {
  margin-left: 10px;
}
footer .cta {
  margin-left: auto;
}
footer .cta button {
  border: 0;
  background: transparent;
}
</style>
<header>
<img src="https://freecodecamp.s3.amazonaws.com/quincy-twitter-photo.jpg" alt="Quincy Larson's profile picture" class="profile-thumbnail">
<div class="profile-name">
  <h3>Quincy Larson</h3>
  <h4>@ossia</h4>
</div>
<div class="follow-btn">
  <button>Follow</button>
</div>
</header>
<div id="inner">
<p>I meet so many people who are in search of that one trick that will help them work smart. Even if you work smart, you still have to work hard.</p>
<span class="date">1:32 PM - 12 Jan 2018</span>
<hr>
</div>
<footer>
<div class="stats">
  <div class="Retweets">
    <strong>107</strong> Retweets
  </div>
  <div class="likes">
    <strong>431</strong> Likes
  </div>
</div>
<div class="cta">
  <button class="share-btn">Share</button>
  <button class="retweet-btn">Retweet</button>
  <button class="like-btn">Like</button>
</div>
</footer>

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.106 Safari/537.36.

Challenge: Add Flex Superpowers to the Tweet Embed

Link to the challenge:
https://www.freecodecamp.org/learn/responsive-web-design/css-flexbox/add-flex-superpowers-to-the-tweet-embed

Can you explain what you are having issues with? The code that you have provided has no errors.

exactly, i am unable to understand why my last test i.e is (.follow-btn should have display flex) is failing.

your code pass for me

thank you but why it is not passing in the fcc challenge page?

I don’t know, you may need to siwtch off your browser extensions, or change browser

the code in itself is correct.

If you can’t make it work changing browser just go to the next challenge