Welcome to the forum.   You can't use 3D transforms on SVG child elements like that, but you can fake the rotation with a scaleX animation.   gsap.to(".yellow-triangle", {   duration: 1.5,   scaleX: 0,   transformOrigin: "50% 50%",   repeat: -1,   yoyo: true }); See the Pen OJPpaZq by PointC (@PointC) on CodePen       Happy tweening and welcome aboard.  
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