JSFiddle - React, Tailwind, and code Playground

HTML

<nav id="something">
    <ul>
        <li>11</li>
        <li>22</li>
        <li>33</li>
    </ul>
</nav>

<ul>
    <li>11</li>
    <li>22</li>
    <li>33</li>
</ul>

CSS

ul {
    margin: 0px;
    padding: 0px;
}
ul li {
  display: inline-block;
}
#something>ul {
}
#something>ul li {
    background: red;
}