JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <span class="big">Hey!</span>
    <span class="small">I am tiny compaired to my brother</span>
    <span class="small">So am I..</span>
</div>

CSS

.big {
    font-size: 20px;
    font-family: arial;
    color: red;
    font-weight: bold;
}

.small {
    font-size: 10px;
}