title: How to specify line breaks in a multi-line flexbox layout?
body: <p>Is there a way to make a line break in multiple line flexbox?</p>
  
  <p>For example to break after each 3rd item in <a href="https://codepen.io/asvirskyi/pen/bdbLNz" rel="noreferrer">this CodePen</a>.</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>.container {
    background: tomato;
    display: flex;
    flex-flow: row wrap;
    align-content: space-between;
    justify-content: space-between;
  }
  .item {
    width: 100px;
    height: 100px;
    background: gold;
    border: 1px solid black;
    font-size: 30px;
    line-height: 100px;
    text-align: center;
    margin: 10px;
  }
  .item:nth-child(3n) {
    background: silver;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="container"&gt;
    &lt;div class="item"&gt;1&lt;/div&gt;
    &lt;div class="item"&gt;2&lt;/div&gt;
    &lt;div class="item"&gt;3&lt;/div&gt;
    &lt;div class="item"&gt;4&lt;/div&gt;
    &lt;div class="item"&gt;5&lt;/div&gt;
    &lt;div class="item"&gt;6&lt;/div&gt;
    &lt;div class="item"&gt;7&lt;/div&gt;
    &lt;div class="item"&gt;8&lt;/div&gt;
    &lt;div class="item"&gt;9&lt;/div&gt;
    &lt;div class="item"&gt;10&lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Like</p>
  
  <pre><code>.item:nth-child(3n){
    /* line-break: after; */    
  }
  </code></pre>