 then using the Bootstrap button variant mixin to create a new style, as demonstrated in the <code>_buttons.scss</code> file.</p>
                  <a href="#" class="btn btn-google btn-block"><i class="fab fa-google fa-fw"></i> .btn-google</a>
                  <a href="#" class="btn btn-facebook btn-block"><i class="fab fa-facebook-f fa-fw"></i> .btn-facebook</a>

                </div>
              </div>

            </div>

            <div class="col-lg-6">

              <div class="card shadow mb-4