JSFiddle - React, Tailwind, and code Playground

HTML

<div>A</div>
<div>B</div>  
<div>C</div>  
<div style="display:none">D</div>
<div style="display:none">E</div>

JavaScript

var divs = document.getElementsByTagName('div');
var last;

if (divs) {
	for (var i = 0; i < divs.length; i++) {
        if (divs[i].style.display != 'none') {
			last = divs[i];           
		}
	}
}

if (last) {
	last.style.background = 'red';
}