JSFiddle - React, Tailwind, and code Playground

HTML

<div id="tools" class="open">
.....
</div>

CSS

#tools {
    position:absolute; 
    top:0; 
    right:0;
    width:5%;
    overflow:hidden; 
    background:red;
}

html, body {
    width: 100%;
    height: 100%;
}