var wp_accordion_element = $('.gutena-accordion-block .wp-block-gutena-accordion-panel'); var wp_content = $('.wp-block-gutena-accordion-panel-content'); wp_accordion_element.on('click', function(){ $(this).siblings().removeClass('active'); //remove all class $(this).addClass('active'); //addclass to clicked $(this).siblings().find(wp_content).css({'max-height': ''}); //css change $(this).find(wp_content).css({'max-height': 'set'}); //css add to clicked })