GenomeDB/mydata/themes/hardwood/templates/system/footer.inc.php

<div class="section bg-inverse main-footer">
    <div class="container">
        <div class="row">
            <div class="col-sm-4 text-center">
                <a href="http://tripal.info" target="_blank">
                    <img src="<?php print base_path() . path_to_theme() . '/dist/images/tripal.png'; ?>"
                         alt="Tripal Logo" class="img-fluid img-max-h100">
                </a>
            </div><!-- /.col -->
            <div class="col-sm-4 text-center">
                <a href="http://tripal.info" target="_blank">
                    <img src="<?php print base_path() . path_to_theme() . '/dist/images/tripal.png'; ?>"
                         alt="Tripal Logo" class="img-fluid img-max-h100">
                </a>
            </div><!-- /.col -->
            <div class="col-sm-4 text-center">
                <a href="http://tripal.info" target="_blank">
                    <img src="<?php print base_path() . path_to_theme() . '/dist/images/tripal.png'; ?>"
                         alt="Tripal Logo" class="img-fluid img-max-h100">
                </a>
            </div><!-- /.col -->
        </div><!-- /.row -->
    </div><!-- /.container -->
</div><!-- /.section -->