<style>
@media only screen and (min-width: 1200px) {
  nav {
    position: fixed;
    top: 1rem;
    left: 0;
  }
}
body {
  padding-top: 0;
}
header {
  text-align: inherit;
}
h1 {
  margin: 0;
  display: inline-block;
  background-image: linear-gradient(to left, violet, indigo, blue, green, yellow, orange, red);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 5rem;
}
summary p {
  display: inline;
}
</style>