I tried to improve the illusion that the fireflies really fall INTO the jar and not behind it. Except this score is also done when jar and fireflies touch each other side by side, I think I could fix this.
Thanks to @Moonlit and @cs3340235 for project and remix. Something I learnt from your projects: I ever wondered how to show the homepage when red button is clicked. You set ghost effect to 100 when you want to hide the page. Page will automatically return on setting the effcect on 0 when red button clicked and (another advantage) cover the reset of effects on other pages. Thank you for this, too.