&lt;div class="input-group flex-nowrap"&gt;
  &lt;span class="input-group-text" id="addon-wrapping"&gt;@&lt;/span&gt;
  &lt;input type="text" class="form-control" placeholder="Username"&gt;
  &lt;span class="input-group-text"&gt;.com&lt;/span&gt;
&lt;/div&gt;