JSFiddle - React, Tailwind, and code Playground

HTML

<div>123</div>

CSS

div {
            width:200px;
            height:600px;
            background:#C0DCC0;
            margin-left:0;
            -webkit-animation:ani 6s steps(1,end) infinite;
        }
        @-webkit-keyframes ani {
            0%   {
                margin-left:0px
            }
            50%  {
                margin-left:100px
            }
            100% {
                margin-left:200px
            }
        }