Resolved: Add images to the DOM after every 2 seconds

setTimeout(function(){
        createBalloon(); 
    }, 2000);

function createBalloon() {

    var colors = ["10vw","30vw","50vw","70vw", "90vw"];
    var randColor = colors[Math.floor(Math.random() * colors.length)];
    var img = document.createElement("img");
    img.src = "balloon.jpg";
    img.className = "balloon";

    var div = document.getElementById("balloon-div");
    div.appendChild(img);
    img.style.position = "absolute";
    img.style.top = "100vh";
    img.style.left = randColor;

    var balloonList = document.getElementsByClassName("balloon");
}

setInterval(function () {
    createBalloon(); 
}, 2000);