JSFiddle - React, Tailwind, and code Playground

by lichangwei

HTML

<div class="fixed-center-wrap">
    <div class="fixed-center"></div>
</div>

CSS

html, body{
    width: 100%;
    height: 100%;
}
.fixed-center-wrap{
    position: fixed;
    top: 50%;
    left: 50%;
}
.fixed-center{
    position: relative;
    width: 200px;
    height: 200px;
    margin-top: -50%;
    margin-left: -50%;
    background: #666;
}