am 5b95337f: am 51372cd2: docs: update "na" style to make opaque, add dropshadow, and re-order z-index to be on top of images

* commit '5b95337f534d635fb790c2a88df46d9b0acf54fc':
  docs: update "na" style to make opaque, add dropshadow, and re-order z-index to be on top of images