JSFiddle - React, Tailwind, and code Playground

HTML

<h1>NEON</h1>

CSS

body{background-color:black;}
h1{
    font-size: 160px;
    font-weight: 400;
    margin : 50px auto;
    color : white;
    text-shadow:
        10px 0 10px white,
        0 0 20px white,
        0 0 30px white,
        0 0 40px #FF00DE,
        0 0 70px #FF00DE,
        0 0 80px #FF00DE,
        0 0 100px #FF00DE,
        0 0 150px #FF00DE,
        0 0 200px #FF00DE;
}