<div class="sidebar collapse">
    <ul class="navigation">
        <li class="active">
            <a href="#" class="expand level-opened" id="second-level"><i class="fa fa-shopping-cart"></i> Teacher</a>
            <ul>
                <li><a href="<?php echo site_url('everbright/teacher_add'); ?>">Add Teacher</a></li>
                <li><a href="<?php echo site_url('everbright/teacher'); ?>">Teacher List</a></li>
            </ul>
        </li>
    </ul> 
</div> 
