JSFiddle - React, Tailwind, and code Playground

HTML

<div id="header">
  <div class="logo">
    <p>Font responsiva.</p>
  </div>
</div>

CSS

#header {
  font-size: 10pt;
}

#header .logo {
  height: 180px;
  box-sizing: border-box;
  width: 100%;
  text-align: center;
  padding: 30px 0 0 0;
  color: #666;
  font-size: 5em;
  font-weight: bolder;
  text-transform: uppercase;
  font-family: 'Raleway';
}

@media screen and (max-width: 680px) {
  #header {
    font-size: 5pt;
  }
}