Fix issue with et-fixed-header not being applied on single event pages in Divi

fixed-header-divi-fix.php

<script>
(function($) {
	$(window).scroll(function() {    
	    var scroll = $(window).scrollTop();

	    if (scroll >= 100) {
	        //clearHeader, not clearheader - caps H
	        $("#main-header").addClass("et-fixed-header");
	    }
	});

	$(window).scroll(function() {    
	    var scroll = $(window).scrollTop();

	    if (scroll < 100) {
	        //clearHeader, not clearheader - caps H
	        $("#main-header").removeClass("et-fixed-header");
	    }
	});
})( jQuery );</script>