#+CAPTION: and _multiple_
#+CAPTION: lines of *captions*!
#+ATTR_HTML: :class "a b c"
#+ATTR_HTML: :id it
#+BEGIN_SRC sh
echo "a bash source block with custom html attributes"
#+END_SRC

and an image with custom html attributes and a caption
#+CAPTION: kittens!
#+ATTR_HTML: :style "border: 10px solid black"
[[https://placekitten.com/200/200#.png]]