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Dropboxes are a really convemient way for reducing on load content. The ThemeKit Caddy dropbox widgets a full width action bar with an animated open/close icon.
Any widget can have its content visible on page load if required. In this case there is a checkbox to remove the animated icon.
Like any media files that ar not in vieew on page load the dropbox images and videos are lazy loade by default.
The video file is inserted in two sizes for computer and smaller mobile devices. This is essential for good page download performance. Always use a basic HTML5 video player.
Avoid players like Flowplayer, jPlayer, Kaltura, Plyr, Video JS, JW Player, Media Element and Wistia unless you are creating a full blown video website.
Thes players have too many extra featires and large supporting files not normally required in most cases.
It is essential to lazy load video so that the video file and assets are not download until the visitor actuall plays it. This is important for pages that will be viewed on mobile devices.