JSFiddle - React, Tailwind, and code Playground

HTML

<div class='circle'>3</div>

CSS

.circle{
    
   position: absolute;
    background: red;
    border-radius: 52px;
    width: 37px;
    right: 308px;
    height: 37px;
    top: 90px;
    text-align: center;
    font-size: 10px;
    color: #FFF;
}