It looks like you problem related to JS Check this file https://sc.apexl.io/wp-content/themes/swim-central-child/scripts/main.js?ver=1.0

    $('.card-cell-button').click(function(event) {
        event.preventDefault();

        var buttonId = $(this).attr('id');
        var infoId = 'info-' + buttonId.split('-')[1];
        var infoContent = $('#' + infoId).html();

        $('#modal-info-content').html(infoContent);
        $('#fullscreen-modal').show();
        $('body').css('overflow', 'hidden'); //prevent scrolling
    });