nav

<header>
  <div class="navbar-wrapper cbp-af-header cbp-af-header-shrink">
      <nav id="main-nav" class="navbar navbar-default navbar-embossed navbar-nopadding navbar   cbp-af-inner" role="navigation">
          <div class="container-fluid">
              <div class="navbar-header">


                  <a class="img-responsive navbar-brand hidden-lg visible-xs visible-sm visible-md" href="index.html" title="">
                      <img src="images/logo-single.png" alt="">
                  </a>
                  <button type="button" id="nav-expander" class="navbar-toggle nav-expander fixed"  >
                    <span class="fui-list"></span>
                  </button>



                   <a class="dropdown-toggle navbar-toggle" href="#" data-toggle="dropdown" id="navSearch"><span class="glyphicon glyphicon-search"></span></a>

                            <div class="dropdown-menu search-dropdown-mobile" >
                                <form class="form-search-top search-main">
                                        <input name="search" type="search" class="" placeholder="Find Friends, Causes or Events" name="search" />
                                </form>
                            </div>




                  <a class="img-responsive navbar-brand visible-lg hidden-xs hidden-sm hidden-md" href="index.html" title="">
                      <img src="images/logo-lg.png" alt="">
                  </a>

              </div>


              <div class="collapse navbar-collapse" id="navbar-collapse-01">
              <!-- <div id="nav-mobile"> -->
                   <ul class="nav navbar-nav navbar-left">
                      <li class="dropdown">
                          <a href="#" class="dropdown-toggle" data-toggle="dropdown"> <span  class="flaticon-info2"></span></a>
                          <span class="dropdown-arrow"></span>
                          <ul class="dropdown-menu">
                              <li><a href="#">For Nonprofits</a>
                              </li>
                              <li><a href="#">For Fundraisers</a>
                              </li>
                              <li><a href="#">For Corporates</a>
                              </li>
                              <li><a href="#">For Clubs/Societies</a>
                              </li>
                              <li><a href="about.html">About Us</a>
                              </li>


                          </ul>
                      </li>

                      <li class=" hidden-xs">
                             <a class="dropdown-toggle" href="#" data-toggle="dropdown" id="navSearch"><span class="glyphicon glyphicon-search"></span></a> <span class="dropdown-arrow"></span>


                            <div class="dropdown-menu" >
                                <form class="form-search-top search-main">
                                        <input name="search" type="search" class=" " placeholder="Find Friends, Causes or Events" name="search" />
                                </form>
                            </div>




                      </li>
                    </ul>

                      <ul class="nav navbar-nav navbar-right">
                      <li><a href="#natural-filter-form" data-toggle="modal">Discover</a></li>
                      <li><a href="#">Support</a></li>
                      <li><a href="#login" data-toggle="modal">Log In</a></li>
                       <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> Join Us  <b class="caret"></b> </a>
                          <span class="dropdown-arrow"></span>
                          <ul class="dropdown-menu">
                              <li><a href="#">Start Fundraising</a></li>
                              <li><a href="#">Register Nonprofit</a></li>
                              <li><a href="#">Register Corporate</a></li>
                              <li><a href="#">Register Club/Society</a></li>
                          </ul>

                       </li>

                      <li class="dropdown">
                          <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                              <img class="flag flag-io" alt="English" src="blank.gif"> <b class="caret"></b>
                          </a>
                          <span class="dropdown-arrow"></span>
                          <ul class="dropdown-menu">
                              <li>
                                  <a href="#">
                                      <img src="blank.gif" class="flag flag-io" alt="English" />English</a>
                              </li>
                              <li>
                                  <a href="#">
                                      <img src="blank.gif" class="flag flag-cn" alt="English" />繁體中文 (Beta)</a>
                              </li>
                          </ul>
                      </li>

                  </ul>
              </div>
              <!-- /.navbar-collapse -->


              <div id="nav-mobile">
                  <ul class="nav navbar-nav navbar-right">
                      <li><a id="nav-close" href="" class="text-right" data-toggle="modal"><span class="fui-cross"></span></a></li>
                      <li><a href="#natural-filter-form" data-toggle="modal">Discover</a></li>
                      <li><a href="#">Support</a></li>
                      <li><a href="#login" data-toggle="modal">Log In</a></li>
                      <li><a href="#signup" data-toggle="modal">Sign Up</a></li>
                      <li class="dropdown">
                          <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                              <img class="flag flag-io" alt="English" src="blank.gif"> <b class="caret"></b>
                          </a>
                          <span class="dropdown-arrow"></span>
                          <ul class="dropdown-menu">
                              <li>
                                  <a href="#">
                                      <img src="blank.gif" class="flag flag-io" alt="English" />English</a>
                              </li>
                              <li>
                                  <a href="#">
                                      <img src="blank.gif" class="flag flag-cn" alt="English" />繁體中文 (Beta)</a>
                              </li>
                          </ul>
                      </li>

                  </ul>
              </div> <!-- /nav-mobile -->

          </div>
          <!-- <div class="shadow"></div> -->
      </nav>
      <!-- /navbar -->
  </div>
</header>