JSFiddle - React, Tailwind, and code Playground

by Александр Парчагин

HTML

<div class="box"></div>

CSS

.box{
    width: 100px;
    height: 100px;
    background: #000;
    position: relative;
}
.box::before{
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 100%;
    margin-left: -4px;
    margin-top: -4px;
}