Lazy Loading Images

I have trouble fixing lazy loading image issues. This is the post on my website: https://hotqua.net/gu-mac-ton-vong-1-day-truoc-tuoi-cua-hot-girl-10x-bi-don-hen-ho-voi-will/   This is the original post: http://danviet.vn/van-hoa-giai-tri/gu-mac-ton-vong-1-day-truoc-tuoi-cua-hot-girl-10x-bi-don-hen-ho-voi-will-1017496.html   For Lazy Loading Images HTML tag, I use: src It didn't fix the images. Any help? Thanks