JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<script>
window.onload= function(){
  var a = document.body;
a.innerText = localStorage['mydoc'];
a.addEventListener('keydown', function(e){
if (e.ctrlKey && e.which==83){
localStorage['mydoc'] = a.innerText;
e.preventDefault();
}
}, false);
}
</script>
<body contenteditable></body></html>