--------------------------- */
  /* buttons */
  /* -------------------------------------------------- */

  /* class for styling links like buttons */
  .button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    margin: 5px;
    padding: 10px 20px;
    font-size: 0.75em;
    font-weight: 600;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 1px;
    background: none;
    color: #2196f3;
    border: solid 1px #bdbdbd;
    border-radius: 5px;
  