title: flex items are not centering
body: <p>I have the following layout which populates a containing div with a number of circles representing team members. I have an odd caveat at the moment where the intended outcome is achieved for teams consisting of <code>&gt;= 3</code> team members, however for teams which only consist of <code>1 || 2</code> members, the circles align to the far left of the container.</p>
  
  <p>Why is this the case?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.fireteam {
    padding: 0 5px;
  }
  
  .fireteam&gt;p {
    max-width: 100%;
    overflow: hidden;
    white-space: nowrap;
    margin: 0 0 0.1rem;
  }
  
  .fireteam #fireteamMembers {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    align-content: center;
    justify-content: center;
    height: 4.2rem;
    list-style: none;
    padding: 0;
    border: 1px solid #000;
    border-radius: 5px;
    overflow: hidden;
  }
  
  .fireteam .fireteamMember {
    width: 1.5rem;
    height: 1.5rem;
    background: #000;
    color: white;
    border-radius: 50%;
    margin: 0.25rem;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"&gt;&lt;/script&gt;
  &lt;link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" /&gt;
  &lt;div class="fireteam col-xs-4"&gt;
    &lt;p&gt;name&lt;/p&gt;
    &lt;label&gt;X members&lt;/label&gt;
    &lt;ul id="fireteamMembers"&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="fireteam col-xs-4"&gt;
    &lt;p&gt;name&lt;/p&gt;
    &lt;label&gt;X members&lt;/label&gt;
    &lt;ul id="fireteamMembers"&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="fireteam col-xs-4"&gt;
    &lt;p&gt;name&lt;/p&gt;
    &lt;label&gt;X members&lt;/label&gt;
    &lt;ul id="fireteamMembers"&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="fireteam col-xs-4"&gt;
    &lt;p&gt;name&lt;/p&gt;
    &lt;label&gt;X members&lt;/label&gt;
    &lt;ul id="fireteamMembers"&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="fireteam col-xs-4"&gt;
    &lt;p&gt;name&lt;/p&gt;
    &lt;label&gt;X members&lt;/label&gt;
    &lt;ul id="fireteamMembers"&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="fireteam col-xs-4"&gt;
    &lt;p&gt;name&lt;/p&gt;
    &lt;label&gt;X members&lt;/label&gt;
    &lt;ul id="fireteamMembers"&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
      &lt;li class="fireteamMember"&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>