JSFiddle - React, Tailwind, and code Playground

HTML

<a href="">2132313123123</a>

CSS

a{
    border-bottom:1px dotted black;
    text-decoration:none;
    position: relative;
}
a:before{
    content:'';
    height:10px;
    width:10px;
    background:red;
    position:absolute;
    right:-10px;
}