JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

#tools{
   position: absolute;
   top: 0;
   right: 0;
   bottom: 0;
   width: 5%;
   overflow: hidden;
    
   background:red;
    font-size:50px;
}