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Animate 3 boxes in a row with Scroll Trigger

Christiemade test
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Hi @Christiemade,


The thing that stands out the most to me is that you're tying the tween to `scrub`, meaning it takes scrolling to progress the tween. If you just want them to appear, you can remove that. Also, you don't have to define each tween separately since they share the same selector and are tweening the same properties. You can offset them with a stagger. Have a look,


See the Pen abVVowa?editors=0010 by sgorneau (@sgorneau) on CodePen


Lastly, if you're going to tween a property that you've defined in CSS (opacity in this case), it's best to pull that out of CSS and either use a set() or fromTo() in GSAP. This is especially true for transforms. And, while opacity is certainly valid, it's best to use the GSAP special property "autoAlpha" as it handles both opacity and visibility.


Hope this helps!





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Yep, I think Shaun is right. Also, it looks like you forgot to gsap.registerPlugin(ScrollTrigger) in your project. In other words, make sure you register the plugin before you try to use it :)


Another reason your target wasn't found is you might be running that JavaScript code in your <head>, before those elements even exist (the browser hasn't parsed them yet). So make sure you either put your script at the END of your <body> or just wrap it in a "load" or "DOMContentLoaded" event listener so that everything exists before your code executes.

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