JSFiddle - React, Tailwind, and code Playground

HTML

<div id="parent">
  <div id="centered">
    Centered but growing bigger and bigger
  </div>
  <div id="menu">
    Menu
  </div>
</div>

CSS

#parent {
  width: 100%;
  padding: 2px;
  border: 1px solid blue;
}

#centered {
  text-align: center;
  width: fit-content;
  position: relative;
  border: 2px solid green;
  margin: auto auto 10px auto;
}

#menu {
  border: 1px solid red;
  position: absolute;
  right: 10px;
  top: 10px;
}