JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>html
        <ul>
            <li>수업</li>
            <li>사전</li>
            <li>쿡북</li>
        </ul>
    </li>
    <li>css</li>
    <li>javascript</li>
    <li>os</li>
    <li>php</li>
    <li>database</li>
</ul>

CSS

li {
    padding-bottom:20px;
}