.searchForm {
    display: flex;
    flex-flow: row nowrap;
    align-items: stretch;
    justify-content: flex-start;
    
    margin: 1em 0em;
  }
  
  .searchForm .primaryButton {
    margin-left: 1em;
    margin-top: 0em;
  }
  
  #authorsLetters > span {
    padding: 0.5em;
    color: var(--colour-text-grey);
  }
  
  #authorsLetters > span:hover {
    cursor: pointer;
    text-decoration: underline;
  }
  
  #authorsLetters > span.highlighted {
    color: var(--colour-text-dark);
  }