JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cair"></div>

CSS

.cair {
    position: absolute;
    top: 0px;
    padding: 30px;
    height: 50px;
    width: 50px;
    background-color: #ccf;
}

JavaScript

$(function () {
    $(".cair").animate({
        top: "+=385px",
    }, {
        duration: 6000,
            "complete": function () {
            $('.cair').remove();
        },
        progress: function (a, p, r) {
            
        }
    });
});