JSFiddle - React, Tailwind, and code Playground
HTML
<div id="division"></div>
JavaScript
var div = document.getElementById("division");
div.runtimeStyle.marginLeft = "12em";
div.runtimeStyle.left = "11em";
alert(div.runtimeStyle.left); // 11em
$(div).outerWidth(true);
alert(div.runtimeStyle.left); // 12em