JSFiddle - React, Tailwind, and code Playground

HTML

<div class="site-wrap">
    <section>
        text<br>
        text<br>
        text<br>
        text<br>
        text<br>
        text<br>
        text<br>
        text<br>
        text<br>
        text<br>
        END
    </section>
    <footer>FOOTER</footer>
</div>

CSS

html {
    height: 100%;
}

body {
    height: 100%;
}

.site-wrap {
    position: relative;
    width: 960px;
    min-height: 100%;
    margin: auto;
    background: radial-gradient(#fff, blue) no-repeat;
}

section {
    line-height: 80px;
    padding-bottom: 100px;
}

footer {
    width: 100%;
    position: absolute;
    bottom: 0;
    height: 100px;
    background: yellow;
}