is it possible that an animation made in edge can "disappear" when it has been played once, so we can have interractions "below" ?
You can put the animation (web content) into a slide show and control the ineterval to same time that animation time.
Use the second a empty object and choose stop at the last image and auto play too.
In first state you let the animation and the second state you let a small empty frame (no fill / no stroke). Just adjust the interval to the same time the animation,
In slideshow option choose auto play and stop ay last image