.stick {
    /*display: flex;
    align-items: center;
    justify-content: center;*/
    transition: 0.15s;
  }

  header[data-visible="sticky"],
  header[data-visible="false"] {
    margin-bottom: 4em;
  }
  header[data-visible="false"] .stick {
    position: fixed;
    top: -4em;
    left: 0;
    right: 0;
    transition: 0.15s;
  }
  header[data-visible="sticky"] .stick {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
  }