JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
 <p style="clear:left;">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
<div class="wrapper">
    <h4>Ausgaben in Millionen Franken</h4>
     <div class="background"></div>
      <div id="eingespart"><h4>Total eingespart:</h4></div>
</div>
<p style="clear:left;">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.<br />
    Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus...

CSS

.container{
width: 500px;
}

.wrapper{
    margin: 0 auto; 
    width: 100%;
    height: 180px;
    background-color:green;
    border-top: 0;
    -webkit-box-shadow: 0 8px 6px -6px #B8B8B8  ;
    -moz-box-shadow: 0 8px 6px -6px #B8B8B8  ;
     box-shadow: 0 8px 6px -6px #B8B8B8  ;
}

.sticky {
    width: 100%;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    border-top: 0;
    padding-left: 15px;
    padding-right: 15px;
    -webkit-box-shadow: 0 8px 6px -6px #B8B8B8  ;
    -moz-box-shadow: 0 8px 6px -6px #B8B8B8  ;
    box-shadow: 0 8px 6px -6px #B8B8B8  ;
}

.background{
    background-color: #000;
    height: 80px;
    width: 100%;
    white-space: nowrap;
    border-top: 0;  
}

JavaScript

var global = {}; 

$(document).ready(function(){
    
    var element = $(".wrapper");
    	offset = element.offset();

    global.top = offset.top;
    global.height = element.outerHeight();
     
});

$(window).scroll(function () {
    
    var scroll_top = $(document).scrollTop();
    
    if (scroll_top > global.top ) {
        $('.wrapper').addClass('sticky');
        $("body").css({
            "padding-top": global.height
        });
        
    } else {
        
        $('.wrapper').removeClass('sticky');
        $("body").css({
            "padding-top": 0
        });
    }
    
});

$(window).resize(function(){

	//create event resizeEnd
	if(this.resizeTO) clearTimeout(this.resizeTO);

	this.resizeTO = setTimeout(function() {
		$(this).trigger('resizeEnd');
	}, 500);

});


$(window).bind('resizeEnd', function() { //window size hasn't changed since 500ms

	var offset = $(".wrapper").offset();
	global.top = offset.top;

});