JSFiddle - React, Tailwind, and code Playground

HTML

<div class="numberCircle">12</div>

CSS

.numberCircle {
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    width: 7px;
    padding: 6px;
    font-size: 12px;
    line-height: 0.5em;
    border: 2px solid #666;
    position: relative;
    text-align: :center;
   
}