JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <h1 class="hallo">HALLO WELT</h1>
</div>

CSS

html {
    height: 100%;
}

body{
    height: 100%;
    font-family:Helvetica, Verdana, Arial, sans-serif;
}

.container {
    height: 100%;
    position: relative;
    background: #007ee8;
    background:-moz-radial-gradient(center, #007ee8, #00539a); /* Firefox */
    background:-webkit-radial-gradient(center, #007ee8, #00539a); /* Safari, Chrome */
    background:-ms-radial-gradient(center, #007ee8, #00539a); /* IE 10+ */
    background:radial-gradient(center, #007ee8, #00539a); /* W3C Standard */
}
 
.hallo {
    border-top: 5px solid #fff;
    border-bottom: 5px solid #fff;
    font-size: 61px;
    font-weight:700;
    color: #FFF;
    
    /* Absolut zentriert */
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
    width: 395px;
    height: 73px;
    overflow: auto;
}