JSFiddle - React, Tailwind, and code Playground

HTML

<div id="main">
     <h1>some text</h1>

</div>

CSS

* {
    margin: 0;
    padding: 0;
}        
html {
    background-color: purple;
}
body {
    background-color: blue;
    height: 100%;
    margin: 0;
}
#main {
    background-color: red;
    min-height: 100%;
}