<div class="row">
    <div class="col-md-12">
            <center>
            <button onclick="window.location.href='<?php echo $HOME.'?ACTIVE=ABOUT' ?>'" type="button" class="btn btn-<?php echo $about_class?> btn-lg"><b>ABOUT</b></button>
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <button onclick="window.location.href='<?php echo $HOME.'?ACTIVE=EVENTS' ?>'" type="button" class="btn btn-<?php echo $events_class?> btn-lg"><b>EVENTS</b></button>
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <button onclick="window.location.href='<?php echo $HOME.'?ACTIVE=DRP' ?>'" type="button" class="btn btn-<?php echo $DRP_class?> btn-lg"><b>FELLOWS</b></button>
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <button onclick="window.location.href='<?php echo $HOME.'?ACTIVE=PARTNERS' ?>'" type="button" class="btn btn-<?php echo $partners_class?> btn-lg"><b>PARTNERS</b></button>
            </center>
    </div>
</div>
