JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cont">
    <span>
        test
    </span><span>
    </span><span>
        test
    </span>
</div>

CSS

.cont {
    height:60px;
    background: #ffff88;
}
.cont span {
    display: inline-block;
    outline: 1px dashed red;
    vertical-align: top;
    width: 33.33%;
    height:100%;
    line-height: 100%;
    padding: 15px;
}