JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="some_div"></ul>

CSS

.hi {
  color: white;
}
.some_div{height:50px;background:red;}
li{color:orange;}

JavaScript

$('.some_div').append("<li style='color:green;'>hey!</li>");
$('.some_div').append("<li>hey!</li>").find("li:last").css("color","yellow");