Bu kodu:
<a href="https://www.youtube.com/watch?v=xxxxxx"class="lightbox"><div style="position: absolute; top: 112px; width: 468px; height: 214px; margin-right:50%; margin-left:center; ; background-image: url(images/head_video_bg.jpg); layer-background-image: url(images/head_video_bg.jpg); border: 1px none #000000; left: 722px;">
Bu kod ile değiştirin:
  <a href="https://www.youtube.com/watch?v=xxxxxx"class="lightbox"><div style="position: absolute; top: 112px; width: 468px; height: 214px; margin-right:50%; margin-left:center; ; background-image: url(images/head_video_bg.jpg); layer-background-image: url(images/head_video_bg.jpg); border: 1px none #000000; left: 0; right:0; margin: auto;">