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<script>
// Tutorial at http://www.detutor.com/2015/03/how-make-blogger-widgetsgadgets-Sticky-float.html
// Free to use or share, but please keep this notice intact.
//<![CDATA[
bs_makeSticky("HTML9"); // enter your widget ID here
function bs_makeSticky(elem) {
 var bs_sticky = document.getElementById(elem);
 var scrollee = document.createElement("div");
 bs_sticky.parentNode.insertBefore(scrollee, bs_sticky);
 var width = bs_sticky.offsetWidth;
 var iniClass = bs_sticky.className +  bs_sticky;
 window.addEventListener(scroll, bs_sticking, false);
 function bs_sticking() {
 var rect = scrollee.getBoundingClientRect();
 if (rect.top < 0) {
 bs_sticky.className = iniClass +  bs_sticking;
 bs_sticky.style.width = width + "px";
 } else {
 bs_sticky.className = iniClass;
 }
 }
}
//]]>
</script>

<style>
.bs_sticking {background:#f2f2f2 !important; position:fixed !important; top:0; z-index:9999; box-shadow:0px 10px 4px -5px rgba(0,0,0,0.3); margin-top: 0; position:relative9 !important;}
</style>