JSFiddle - React, Tailwind, and code Playground

by techsin

HTML

<div class="cont">
    <div class="body"></div>    
    <div class="footer"></div>
</div>

CSS

*{margin: 0; padding: 0;}
body, html { height: 100%; overflow: auto; }
.cont {
    margin: 10px;
    border:1px solid black;
    padding: 10px;
    height: 100%;
}
.body { min-height: calc(100% - 40px);
     background-color: purple;   }
.footer {
    background-color: yellow;
    height: 40px;
}