JSFiddle - React, Tailwind, and code Playground

HTML

This is a <span id="mySpan">test of something that looks like a cursor</span>, allegedly.

CSS

.cursor {
    border-left: 1px solid red;
    margin-right: -1px;
    display: inline;
    position: relative;
    z-index: 1;
}

JavaScript

$('#mySpan').addClass('cursor');