JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <ul>
        <li>C++</li>
        <li>PHP</li>
        <li>CSS</li>
        <li>ASP</li>
        <li>JavaScript</li>
        <li>jQuery</li>
        <li>HTML 5</li>
        <li>StackOverflow</li>
    </ul>
</div>

CSS

ul {
    width:200px;   
    margin-left:-1px;/* hide the left borders */
}

li {
    float:left;   
    padding:2px 10px;
    border-left:1px solid #000;
}

div {
   overflow:hidden;/* hide the left borders */  
}