- <div>
+ <div class="px-4 mx-auto max-w-screen-2xl">
      <video
          poster="https://www.fldrupal.camp/sites/all/themes/fldc17/images/video-poster.jpg"
          preload="auto"
+         class="w-full opacity-60"
      >
          <source
              src="https://www.fldrupal.camp/sites/default/files/FLDC17%20Promo-high.mp4"
              type="video/mp4"
          >
      </video>
  </div>