JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="nav-item">Home</ul> 
<ul class="nav-item">about us</ul>

CSS

.nav-item{ 
    border-style:solid; 
    border-color:#000000; 
    border-width:2px; 
    float:left; 
    margin-right:10px; 
    }