header {
  border-bottom: 1px solid #eee;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
}
header .current-page-name {
  place-self: center;
  text-transform: uppercase;
  font-size: 1em;
  line-height: 0;
}
header .buttons {
  place-self: end;
  font-size: 1.7em;
  line-height: 0;
}
header .buttons span {
  width: 3em;
}
header a {
  text-decoration: none;
}
nav ul {
  list-style-type: none;
  padding-left: 0;
}
@media screen and (min-width: 550px) {
  header nav,
  header .buttons {
    justify-self: center;
  }
}