JSFiddle - React, Tailwind, and code Playground

HTML

<button>
    <span id="lol1">test</span>
    <span id="lol2">test</span>
</button>

CSS

#lol1 {
    color: #b90000;
    font-size: 20px;
}
#lol2 {
    font-weight: bold;
    color: #00b900;
    font-size: 14px;
}