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<html><style>#div1 { font-size:48px;}</style><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"><body><div id="div1" class="fa"></div><script>function openfolder() { var a; a = document.getElementById("div1"); a.innerHTML = ""; setTimeout(function () { a.innerHTML = ""; }, 1000);}openfolder();setInterval(openfolder, 2000);</script><p>This example demonstrates how to use an icon library to make an animated effect.</p></body></html>