[Master Feature] Allow ads to be position fixed on desktop canoncial

[bjalford]

We have a requirement to make an ad sticky in an article template for a publisher in the right hand column on desktop (AMP as canonical). If we add a position fixed the ad doesn't render.

In the same way the amp-sticky-ad has a height restriction, could amp-ads on desktop (or media query great than x pixels) that are position fixed have a max width. Our specific requirement is to render MPUs and double MPUs (300 wide).

[zhouyx]

to @jasti Regarding how sticky ad works on desktop.

@bjalford that's right, AMP won't render an ad if it is position fixed unless it is positioned inside flying-carpet/lightbox/sticky-ad container.
The request here is to have the sticky-ad sticky to the side of the page (rather than bottom) on desktop? And then maybe a max width restriction can be applied.

[bjalford]

@zhouyx correct. My exact requirements would be for it to be inside a sidebar container (max-width) and be the bottom item inside that container which would then stick.

Example can be seen here: https://www.independent.co.uk/news/uk/home-news/northern-ireland-abortion-pill-mother-prosecuted-daughter-belfast-court-a8546936.html

• Under 'Popular Videos' an ad (JS DFP) is rendering which we then stick as the user scrolls down the page

[jasti]

@bjalford unfortunately large sticky ads on desktop are not approved by the better ads standard as a good ad/ user experience, so we have had to limit the height of the sticky ad on both desktop & mobile. https://www.betterads.org/desktop-large-sticky-ad/

[zhouyx]

@bjalford As Vamsee said. Large sticky ads on desktop is not something we are planning to build for better ad/user experience. Close as not intent to implement.

[jasti]

Reopening this after more research. We'll look into supporting this since
a) This is referring to the sticky ad being in the right or left rail in a fixed position in the desktop view
b) It doesn't obstruct content and is not simply a larger version of the current sticky ad on mobile