JSFiddle - React, Tailwind, and code Playground

HTML

<span class="separatedLinks">
    <a href="...">link1</a>
    <a href="...">link2</a>
    <a href="...">link3</a>
</span>

CSS

.separatedLinks a+a {
    border-left: 2px solid black;
    padding: 0.2em;
}