go for sidebar mini 50x50 pixels -->
          <span class="logo-mini"><b>A</b>LT</span>
          <!-- logo for regular state and mobile devices -->
          <span class="logo-lg"><b>Admin</b>LTE</span>
        </a>
        <!-- Header Navbar: style can be found in header.less -->
        <nav class="navbar navbar-static-top" role="navigation">
          <!-- Sidebar toggle button-->
          <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
            <span class="sr-only">Toggl