JSFiddle - React, Tailwind, and code Playground

HTML

<div class="profile">
  login
  <div class="dropdown">
    <a href="#">Login</a>
    <a href="#">Registrarse</a>
  </div>
</div>

CSS

.profile{
  position:fixed;
  background:#aaa;
  right:200px;
}

.profile .dropdown{
  position:absolute;
  background:#eee;
  padding:10px 20px;
  display:none;
}

.profile:hover .dropdown{
  display:block;
}