JSFiddle - React, Tailwind, and code Playground

HTML

<header>HEADER</header>

<div id="content">
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
    text text text<br>text text text<br>
</div>

<footer>FOOTER</footer>

CSS

* {
    margin: 0;
    padding: 0;
}
header, footer {
    background: #f00;
    position: fixed;
    width: 100%;
    height: 50px;
    left: 0;
}
header {
    top: 0;
}
footer {
    bottom: 0;
}

#content {
    margin: 50px 0;
}