JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head></head>
<body>
    <a href="#" class='underline'>
      <span>this just</span><br/>
      <span>a test</span><br/>
      <span>of underline color</span>
    </a>
</body>
</html>

CSS

a.underline {
        text-decoration: none;
      }
      a.underline span {
        display: inline-block;
        border-bottom: 1px solid red;
        font-size: 15px;
        line-height: 12px;
      }