.header__box {
  display: block;
  text-align: center;
  margin: 2em;
}
.header__links a {
  font-size: 2em;
  font-weight: 600;
  text-decoration: none;
  padding: 0 1em 0 1em;
}
.header__box h1 {
  font-size: 8em;
  font-weight: 600;
  font-family: "Gill Sans", "Gill Sans MT", Calibri, "Trebuchet MS", sans-serif;
  border-bottom: 2px solid black;
}