JSFiddle - React, Tailwind, and code Playground

by Nabaraj Saha

HTML

<div class="circle">
<div class="square"></div>
</div>

CSS

.circle {
	background-color: #000;
    border-radius: 50%;
    float: left;
    height: 50%;
    position: fixed;
    width: 50%;
	}
.square {
	background-color: #ff0000;
    bottom: 0;
    float: left;
    height: 60%;
    left: 0;
    margin: auto;
    position: absolute;
    right: 0;
    top: 0;
    width: 60%;
    z-index: 99;
	}