btn

[ToniCalfim]

btn btn-primary
btn btn-secondary
btn btn-success
btn btn-danger
btn btn-warning
btn btn-info
btn btn-light
btn btn-dark
btn btn-link

[ToniCalfim]

<div class="footer-actions">

    <div class="btn btn-danger" style="float: right" id="close-modal"> Fechar </div>

<div>

<script>

    $('#close-modal').click(

        function () {

            $('[widget="TWindow"]').remove();

        }

    );

</script>

[ToniCalfim]

<div class="footer-actions">

    <a class="btn btn-default" generator="adianti" href="index.php?class=SidePageView&method=onClose&static=1"
        style="float: left">
        <i class="fa fa-times red" aria-hidden="true"></i>
        Close
    </a>

</div>

public static function onClose() {

    TScript::create("Template.closeRightPanel()");

}

[ToniCalfim]

https://getbootstrap.com/docs/5.1/components/buttons/