Adding Stackly to your header

Copy Stackly script & add to all pages in your header tag.

<script>(function(){var e=document.getElementById("stackly_external_js");e||((e=document.createElement("script")).src="https://app.stackly.com/assets/js/external.js",e.id="stackly_external_js",document.getElementsByTagName("head")[0].appendChild(e))})();</script>