I have built a webstory but i cant insert amp-keyframes on it.
The validator says i cant put amp-keyframe on the body because "" must have only one child: "".
But the documentation of webstories says the unique place i MUST place amp-keyframes is at "the last child of body" (https://amp.dev/documentation/guides-and-tutorials/websites/learn/spec/amphtml?redirected#keyframes-stylesheet).
Im wondering if Google has blocked this "amp-keyframes" on the webstories.
Here is the CodePen with the code: https://codepen.io/Luiz-Antonio-J-nior/pen/QWZpRRR
The Amp Validator: https://search.google.com/test/amp
Anyone solved this?