JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li style="flex: 1 1;">A</li>
    <li style="flex: 2 2;">this is a pretty long text that will overflow the parent container</li>
    <li style="flex: 1 1;">C</li>
</ul>

CSS

ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

li {     
    padding: 0em 1em;
    background-color: blue;
    border-radius: 2em;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    color: white;
}