Google announced they added some features to AMP including a sidebar menu, social sharing embedding, dynamic CSS classes and accordions. Yes, accordions.
Google wrote:
Publishers need to make the most out of every bit of space on a mobile device, but that doesn’t mean having to discard good content. Even on desktop platforms, the use of a collapsible section is a popular way to optionally display detailed information under a higher-level heading.brings this solution to AMP with a freely styleable component that lets you expand and collapse a section by tapping on its header.
Here is how they work:
But you ask, didn't Google tell us time and time again that content within hidden tabs or accordions do not rank well in Google and Google may ignore it?
Well, maybe not here?
I did ask John Mueller about it on Twitter but he has yet to reply.
@glenngabe i wonder if Google sees the content in those AMP accordions @JohnMu ;P
— Barry Schwartz (@rustybrick) May 25, 2016
Of course, this may change how Google communicates about such content. In a mobile first world, having content in tabs, accordions, etc is clearly a smart thing to do. Well, I mean, Google said so above.
Forum discussion at Twitter.