add_action('wp_footer','replacePostTitles');function replacePostTitles(){?><script>document.addEventListener("DOMContentLoaded",function(){var postTitles=document.querySelectorAll('.post-title.is-large');postTitles.forEach(function(title){var h3Title=document.createElement('h3');h3Title.innerHTML=title.innerHTML;title.parentNode.replaceChild(h3Title,title)})});</script><?php}