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HTML

              
                <!--
    Old-school method of animating:  setTimeout()

    Probably would be smoother using CSS Animation
    but only had some much time to throw this together

    ๐Ÿ˜œ



-->
<div id="portal"> 
  <div id="dspArea"> 
  </div><!-- dspArea -->
  <div id="title">Fruit and Veg</div>
</div><!-- portal -->
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css?family=Montserrat:800&display=swap');

body {
  overflow:hidden;
  margin:0;
  
}

.fruitAndVeg {
  display:none;
}

#portal {
  position:absolute;
  overflow:hidden;
  margin:0;
  padding:0;
  top:0px;
  left:0px;
  background: rgb(65,56,117);
  background: linear-gradient(0deg, rgba(65,56,117,1) 0%, rgba(161,59,46,1) 100%);

}


#dspArea {
  position:absolute;
  overflow:hidden;
  background: rgb(73,199,244);
  background: linear-gradient(0deg, rgba(73,199,244,1) 0%, rgba(45,253,230,1) 100%);
  width:400px;
  border-left:solid #7733ff 3px;
  border-right:solid #2a0080 3px;
}

#title {
  z-order:10;
  text-align:center;
  width:400px;
  position:absolute;
  top:10px;
  font-family: Montserrat, Helvetica, Arial, sans-serif;
  font-size:26pt;
  color:#660033;
  text-shadow:3px 3px 4px gray;
}



.small0 {
  position:absolute;
  width:40px;
  height:50px;
 
  z-order:1;
  font-size:30pt;
}

.small1 {
  position:absolute;
  width:50px;
  height:50px;
  
  z-order:1;
  overflow:hidden;
  font-size:34pt;
}

.small2 {
  position:absolute;
  width:60px;
  height:60px;
  
  z-order:1;
  overflow:hidden;
  font-size:38pt;
}

.medium0 {
  position:absolute;
  width:66px;
  height:66px;
  
  z-order:1;
  overflow:hidden;
  font-size:44pt;
}

.medium1 {
  position:absolute;
  width:70px;
  height:70px;
  
  z-order:1;
  overflow:hidden;
  font-size:48pt;
}

.medium2 {
  position:absolute;
  width:70px;
  height:70px;
  
  z-order:1;
  overflow:hidden;
  font-size:50pt;
}

.large0 {
  position:absolute;
  width:80px;
  height:80px;
  
  z-order:1;
  font-size:70pt;
}

.large1 {
  position:absolute;
  width:80px;
  height:80px;
  
  z-order:1;
  font-size:75pt;
}

.large2 {
  position:absolute;
  width:100px;
  height:100px;
  
  z-order:1;
  font-size:95pt;
}
              
            
!

JS

              
                let w,h;
let sPieces = [];
let nIdCount = 0;
let sTypes = [];
let nSpeeds = [];
let nSpinSpeeds = [];
let batchInfo = {};
let currentPieces = [];

const BATCH_TOTAL1 = 155;
const BATCH_TOTAL2 = 155;


function pageSetup() {
    
  sPieces[0] = [];
  sPieces[1] = [];
  sPieces[2] = [];
  
  sPieces[0][0] = "๐ŸŒถ";
  sPieces[0][1] = "๐Ÿ’";
  sPieces[0][2] = "๐Ÿ“";
  
  sPieces[1][0] = "๐ŸŽ";
  sPieces[1][1] = "๐Ÿ…";
  sPieces[1][2] = "๐ŸŒฝ";
  sPieces[1][3] = "๐Ÿฅ•";
  sPieces[1][4] = "๐Ÿฅฆ";
  sPieces[1][5] = "๐Ÿ‹";
  sPieces[1][6] = "๐Ÿ‡";
  sPieces[1][7] = "๐Ÿ“";
  sPieces[1][8] = "๐Ÿ";
  
  sPieces[2][0] = "๐Ÿ‰";
  sPieces[2][1] = "๐Ÿ";
  
  
  sTypes[0] = "small";
  sTypes[1] = "medium";
  sTypes[2] = "large";
  
  nSpeeds[0] = 8;
  nSpeeds[1] = 12;
  nSpeeds[2] = 16;
  nSpeeds[3] = 20;
  
  nSpinSpeeds[0]=1;
  nSpinSpeeds[1]=4;
  nSpinSpeeds[2]=8;
  nSpinSpeeds[3]=20;
  
  window.addEventListener('resize', pageResize);
  pageResize();
  
  makeABatch();
  setTimeout("renderFruitAndVeg()",1000); // give time for first batch to be made (at least some of it)
  console.log("got to end of pageSetup()")
} // end of function pageSetup()


function pageResize() {
  w = window.innerWidth;
	h = window.innerHeight;
  
  let nLeft = Math.floor((w - 400) / 2);
  
  if (nLeft < 0) {
    nLeft = 0;
  } // end if
  
  let portal = $("#portal")[0];
  portal.style.width = (w)+"px";
  portal.style.height = (h)+"px";
  
  let dspArea = $("#dspArea")[0];
  dspArea.style.left = (nLeft)+"px";
  dspArea.style.height = (h)+"px";
  
  let title = $("#title")[0];
  title.style.left = (nLeft)+"px";
} // end of function pageResize()


function rnd(nNum) {
  return Math.floor(Math.random() * nNum);
} // end of function rnd


function makeAPiece() {
  const dspArea = $("#dspArea")[0];
  let nType = rnd(3);
  let nSize = rnd(3);
  let sPossibilities = sPieces[nType];

  let nPiece = rnd(sPossibilities.length);
  let sPiece = sPossibilities[nPiece];//.substr(nPiece,1);
  let sClass = sTypes[nType] + (nSize);
  let nTotalDropDistance = h + Math.floor(h/3);
  let piece = {};
  piece.char = sPiece;
  piece.className = sClass;
  piece.totalDropDistance = nTotalDropDistance;
  piece.currentPos = 0 - Math.floor(h/5);
  piece.currentAngle = rnd(364);
  piece.speed = rnd(4);
  piece.spinSpeed = rnd(4);
  const el = document.createElement("div");
  el.innerHTML = sPiece;
  el.className = sClass;
  nIdCount++;
  
  if (nIdCount>100000) {
    nIdCount = 1;
  } // end if
  
  piece.elId = "pc"+nIdCount;
  el.id = piece.elId;
  let nLeft = rnd(h) - 40;
  el.style.left = (nLeft)+"px";
  el.style.top = (piece.currentPos)+"px";
  el.style.transform = "rotate("+(piece.currentAngle)+"deg)";
  piece.el = el;
  dspArea.appendChild(el);  
  currentPieces.push(piece);
  //console.log(sClass)
} // function makeAPiece() 


function makeABatch() {
  batchInfo.currentIndex = 0;
  batchInfo.batchTotal = rnd(BATCH_TOTAL1)+BATCH_TOTAL2;
  setTimeout("makeABatch2()", 10)
} // end of function makeABatch()



function makeABatch2() {
  makeAPiece();
  batchInfo.currentIndex++;
  let nDelay;
  if (batchInfo.currentIndex < batchInfo.batchTotal) {
    nDelay = rnd(200)+100;
    setTimeout("makeABatch2()",nDelay);
  } else {
    nDelay = (rnd(2)+1) * 1000 + rnd(200);
    setTimeout("makeABatch()",nDelay);
  } // end if/else
  
}// end of function makeABatch2()



function renderFruitAndVeg() {
  let n,el;
  //console.log("efg "+currentPieces.length)

  for (n=0;n<currentPieces.length;n++) {
    piece = currentPieces[n];
    //console.log("before currentPos")
    piece.currentPos = piece.currentPos + nSpeeds[piece.speed];
    piece.currentAngle = piece.currentAngle + nSpinSpeeds[piece.spinSpeed];
    
    if (piece.currentAngle > 364) {
      piece.currentAngle = 0;
    } // end if
    
    el = piece.el;
   // console.log("before style top "+piece.currentPos)
    el.style.top = (piece.currentPos)+"px";
    el.style.transform = "rotate("+(piece.currentAngle)+"deg)";
  //  console.log("after style top")
    if (piece.currentPos > piece.totalDropDistance) {
      console.log("deleting")
      el.parentNode.removeChild(el);
      currentPieces.splice(n, 1); 
      n--;
    } // end if
  } // end for let
  //console.log("abc")
  setTimeout("renderFruitAndVeg()",5);
} // end of function renderFruitAndVeg



pageSetup();
              
            
!
999px

Console