title: How to insert a floating circle in the middle of the top of a div?
body: <p>I have a card created with bootstrap, and I need to find a way to insert a circle on the top of the card.</p>
  
  <p>My code:(Demo in <a href="https://jsfiddle.net/de2Lpzrg/1/" rel="nofollow noreferrer">JSFiddle</a>)</p>
  
  <pre><code>&lt;style&gt;
          .numberCircle {
              width: 39.6px;
              height: 39.6px;
              border-radius: 50%;
              text-align: center;
              font-size: 21.6px;
              border: 2px solid #3498db;
              color:white;
              background:#3498db;
  
          }
  &lt;/style&gt;
  
  &lt;body style="margin:20px; padding:20px;"&gt;
      &lt;div class="card" style="width: 18rem;"&gt;
          &lt;div class="card-body" style="text-align:center"&gt;
            &lt;div class="numberCircle"&gt;30&lt;/div&gt;
            &lt;h5 class="card-title"&gt;Card title&lt;/h5&gt;
            &lt;p class="card-text"&gt;Some quick card description...&lt;/p&gt;
            &lt;a href="#" class="card-link"&gt;Card link&lt;/a&gt;
          &lt;/div&gt;
       &lt;/div&gt;
  </code></pre>
  
  <p>And this is the result that I expect:</p>
  
  <p><a href="https://i.stack.imgur.com/XX8BA.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XX8BA.jpg" alt="enter image description here"></a></p>
  
  <p>How can I do this ?</p>