JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.box{
    width:50px; height:50px;
    background: blue;
    box-shadow: 0 0 5px blue;
    margin:100px;
    float: left;
    -moz-animation: 3s ease 0s normal none infinite swing;
    -moz-transform-origin: center top;
}