s="material-icons">insert_drive_file</i>Selecione um arquivo
                  <input class="hidden" id="hidden-file" type="file">
                </label>
              </div>
            </div><br>
            <hr>
            <h2>Regular inputs</h2>
            <p>As expected, you can simply use your <code>input</code>s, <code>select</code>s and <code>textarea</code>s and they will look fine. No extra classes needed:</p><br>
            <div class="row justify-content-center">
              <div class="c