<section class="intro texto_intro">
  Hace muchos megasegundos,<br> en un servidor muy,<br> muy remoto ...
</section>
@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700);

body {
  margin: 0;
  background: #000;
  overflow: hidden;
}

.intro {
  position: absolute;
  top: 40%;
  left: 20%;
  z-index: 1;
}

.texto_intro {
  font-family: "News Cycle", sans-serif;
  color: #4bd5ee;
  font-weight: 400;
  letter-spacing: .1em;
}
  
  
var w = window.innerWidth;

var intro = document.getElementsByClassName("intro")[0];

intro.style.fontSize = w / 30 + "px";

window.addEventListener("resize", function() {
  w = window.innerWidth;
  intro.style.fontSize = w / 30 + "px";
});

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.