Question regarding CSS margin property

Tell us what’s happening:
In the header .follow-btn selector within the style tag, I am confused why the “margin: 0 0 0 auto” will push the follow button to the far end on the right.

I would be grateful if someone can provide an explanation for this! Thanks in advance!

Your code so far


<style>
body {
  font-family: Arial, sans-serif;
}
header, footer {
  display: flex;
  flex-direction: row;
}
header .profile-thumbnail {
  width: 50px;
  height: 50px;
  border-radius: 4px;
}
header .profile-name {
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-left: 10px;
}
header .follow-btn {
  display: flex;
  align-items: center;
  margin: 0 0 0 auto;
}
header .follow-btn button {
  border: 0;
  border-radius: 3px;
  padding: 5px;
}
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 .stats {
  display: flex;
  font-size: 15px;
}
footer .stats strong {
  font-size: 18px;
}
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>

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Challenge: Use the align-items Property in the Tweet Embed

Link to the challenge:

@brucemch18 this is a typical margin syntax:

p {
  margin: 25px 50px 75px 100px;
}

margin: 25px 50px 75px 100px;

  • top margin is 25px
  • right margin is 50px
  • bottom margin is 75px
  • left margin is 100px

if you want to change the position of the button, change the value of the second attribute. Margin right