JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content">Content Content LINE1 Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content ContenContent Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content ContenContent Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content ContenContent Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content Content LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50 LINE50...

CSS

.content {    
    position:relative;
    z-index:2;
    background:#FFF;
}
footer {
    width: 400px;
    background-color: #ccc;
    position: absolute;
    bottom: 0;
    z-index:1;
}