<h1>👋🏼 Hello World</h1>
body{
  font-family:system-ui;
  background:#f06d06;
  color:white;
  text-align:center;
}
document.getElementsByTagName("h1")[0].style.fontSize = "6vw";
Run Pen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.