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document.addEventListener("DOMContentLoaded", function() { const youtubeIframes = document.querySelectorAll('iframe[src*="youtube.com"], iframe[src*="youtu.be"]'); youtubeIframes.forEach(function(iframe) { const parent = iframe.parentElement; if (!parent.classList.contains('youtube-container')) { const wrapper = document.createElement('div'); wrapper.classList.add('youtube-container'); iframe.parentNode.insertBefore(wrapper, iframe); wrapper.appendChild(iframe); } }); });