JSFiddle - React, Tailwind, and code Playground

by id0

HTML

<div class="wrap">
    <p class="em">
        em-sized
        <span class="resized-text">
            resized text
            <br>new line
        </span>
    </p>
    <p class="px">
        pixel-sized
        <span class="resized-text">
            resized text
            <br>new line
        </span>
    </p>
    <p class="p">
        percent-sized
        <span class="resized-text">
            resized text
            <br>new line
        </span>
    </p>    
</div>

CSS

.wrap {
    font-size: 14px;
    width: 90%;
}

.wrap p {
    padding: 10px 20px;
    height: 50px;
    margin: 10px;
    background: #eee;
    display: inline-block;
    line-height: 3;
    border: solid 1px #555;
    border-radius: 5px;
}

.em {
    font-size: 28px;
}

.px {
    font-size: 2em;
}

.p {
    font-size: 200%;
}

.resized-text {
    font-size: .8em;
}