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JSFiddle - React, Tailwind, and code Playground

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W=500;H=250;function r(){return 2*m.sqrt(-2*m.log(m.random()))*m.sin(6*m.random())}function n(){z=[];for(i=W;i;i--){s={};s.x=s.y=H;s.f=r();s.g=r();z.push(s)}}function w(){x.clearRect(0,0,W,W);z.forEach(function(a){a.x+=a.f;a.y+=a.g+=.2;x.fillStyle="rgba(0,0,0,"+m.max(1-m.sqrt(m.pow(H-a.x,2)+m.pow(H-a.y,2))/H,0)+")";x.fillRect(a.x,a.y,2,2)})}z=[];m=Math;d=document;c=d.createElement("canvas");c.width=c.height=W;d.body.appendChild(c);x=c.getContext("2d");n();setInterval(n,2e3);setInterval(w,10)

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JSFiddle - React, Tailwind, and code Playground

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