Nav {
  display: flex
  align-items: center

  margin: 0 0 1rem 1rem

  a, div {
    color: #222
    margin-right: 1rem

    :hover {
      text-decoration: underline
    }
  }

  div.back {
    border: 1px solid #ddd
    padding: 0 0.2em;
    font-size: 1.4rem;
    border-radius: 4px

    :hover {
      text-decoration: none
      border-color: #222 
    }
  }
}