JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
  <li>Inicio</li>
  <li>NotĂ­cias</li>
  <li>Download</li>
  <li>Contatos</li>
</ul>

CSS

ul li
{
    display: inline;
}

li:before {
content: " | ";
}

li:first-child:before {
content: none;
}