Responsive Grid Row Media
These items display media at half the container width when viewed on wider screens and then full width below the break point. In this case, the break point is set to 799px to make the layout change on tablets in portrait mode. This means that any images or other media files don't need to be any bigger than 800px in width.
The video file is prevented from download at page load and the slideshow images are lazy loading. These features allow a much faster page download time.