JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cont">
    <span class="wrap">
        <span class="inner">
            Hello, my name is Mao
        </span>
        <span class="emptyornot">
        </span>
    </span>
</div>

CSS

.cont { width: 150px }

.wrap:after 
{
    content: 'A';
    background: #ccc;
    display: inline;
}