JSFiddle - React, Tailwind, and code Playground

HTML

<div class="circle">
    <div>
        <span>This is a line</span>
        <span>This is yet another line!</span>
        <span>Last Line!</span>
    </div>
</div>

<div class="circle">
    <div>
        <span>This</span>
        <span>one is</span>
        <span>small</span>
    </div>
</div>

<div class="circle">
    <div>
        <span>This one has</span>
        <span>more lines and is much</span>
        <span>bigger,</span>
        <span>larger,</span>
        <span>cooler.</span>
    </div>
</div>

CSS

.circle {
    position:relative;
    background-color: rgba(0, 0139, 0139, 0.5);
    padding:10px;
    -moz-border-radius:50%;
    -webkit-border-radius: 50%;
    border-radius:50%;
}
.circle > div{
    position:absolute;
    top:50%;
    left:50%;
}
.circle span {
    display:block;
    white-space:nowrap;
    text-align:center;
}

JavaScript

// Jquery, blah.
$('.circle > div').each(function(){
    var h, w, max;
    w = $(this).width();
    h = $(this).height();
    max = w > h ? w : h;
    $(this).css('margin-left', -parseInt(w/2,10));
    $(this).css('margin-top', -parseInt(h/2,10));
    $(this).parent().width(max);
    $(this).parent().height(max);
});