<span class="input-group-btn">
                <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i></button>
              </span>
            </div>
          </form>
          <!-- /.search form -->

          <!-- Sidebar Menu -->
          <ul class="sidebar-menu">
            <li class="header">HEADER</li>
            <!-- Optionally, you can add icons to the links -->
            <li class="active"><a href="#"><i class="fa fa-link"></i> <span>Link</span