JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
  <head>
    <title>Test</title> 
  </head>
  <body>
 <div id="Menu" style="">This is a test. This text should be on the left side of the page.</div>
  </body>
</html>

CSS

#Menu
{
width:100vh;
height:2vw;
background-color:#336699;
transform: rotate(-90deg);
}