Looks to me like they're all base64. Jsdo allows file uploads, so I'm assuming that (outside of novelty), the animations may not execute properly if the images aren't loaded. Using base64 ensures the images are loaded before the keyframe anims are rendered.
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I wonder why some graphics are embedded in CSS and some not.
Looks to me like they're all base64. Jsdo allows file uploads, so I'm assuming that (outside of novelty), the animations may not execute properly if the images aren't loaded. Using base64 ensures the images are loaded before the keyframe anims are rendered.