JSFiddle - React, Tailwind, and code Playground
HTML
<div id="fake-second"></div>
<div id="first"> first div </div>
<div id="second"> second div </div>
JavaScript
$("#fake-second").append($("#second").html());
$("#second").hide();
<div id="fake-second"></div>
<div id="first"> first div </div>
<div id="second"> second div </div>
$("#fake-second").append($("#second").html());
$("#second").hide();