JSFiddle - React, Tailwind, and code Playground

HTML

<div class="main">
    <div class="div1"></div>
    Center with Red!
</div>

CSS

.main{
    height: 50px;
    width: 100%;
    background-color: #000000;
    text-align: center;
    color: #ffffff;
    line-height: 50px;
    font-size: 24px;
}

.div1{
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: #ff0000;
}