JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div class="center"></div>
    <div class="center"></div>
    <div class="center"></div>
</body>

CSS

body, html {
    width: 100%;
    height: 100%;
    overflow:hidden;
    text-align: center
}
.center {
    width: 100px;
    height: 100px;
    display: inline-block;
    background: #ddd
}