. @import url(https://fonts.googleapis.com/css?family=Open+Sans); html, body { height: 100%; margin: 0; position: relative; background: #222; font-family: "Open Sans"; } #wrap { width: 100%; height: 100%; position: relative; overflow: hidden; } #wrap p { position: absolute; left: 50%; top: 50%; transform: translateX(-50%) translateY(-50%); color: rgba(255,255,255,.5); font-size: 30px; text-transform: uppercase; letter-spacing: 5px; text-align: center; } .ball { pointer-events: none; position: absolute; width: 10px; height: 10px; border-radius: 50%; background: gray; animation: implode 1s ease-in-out; animation-fill-mode: both; opacity: .5; } @keyframes implode { 100% {transform: scale(0)} } $(document).ready(function(){ var mousePos = {}; function getRandomInt(min, max) { return Math.round(Math.random() * (max - min + 1)) + min; } $(window).mousemove(function(e) { mousePos.x = e.pageX; mousePos.y = e.pageY; }); $(window).mouseleave(function(e) { mousePos.x = -1; mousePos.y = -1; }); var draw = setInterval(function(){ if(mousePos.x > 0 && mousePos.y > 0){ var range = 15; var color = "background: rgb("+getRandomInt(0,255)+","+getRandomInt(0,255)+","+getRandomInt(0,255)+");"; var sizeInt = getRandomInt(10, 30); size = "height: " + sizeInt + "px; width: " + sizeInt + "px;"; var left = "left: " + getRandomInt(mousePos.x-range-sizeInt, mousePos.x+range) + "px;"; var top = "top: " + getRandomInt(mousePos.y-range-sizeInt, mousePos.y+range) + "px;"; var style = left+top+color+size; $("").appendTo('#wrap').one("webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend", function(){$(this).remove();}); } }, 1); });