function repeater_vertical_header() {
  ?>
  <style type="text/css">
    .vertical-header thead {
      float: left;
    }

    .vertical-header thead th,
    .vertical-header td {
      display: block;
      width: auto !important;
    }

    .vertical-header tbody {
      float: left;
      border-right: 1px solid #e1e1e1;
    }

    .vertical-header tbody tr {
      float: left;
    }

    .vertical-header th,
    .vertical-header td {
      height: 44px;
      line-height: 27px;
      border-color: #e1e1e1;
      border-width: 1px 0 0 1px !important;
    }

    .vertical-header .acf-row-handle {
      background-color: #fff !important;
    }

    .vertical-header .acf-row-handle .acf-icon {
      position: static;
      float: left;
      margin: 4px;
    }
  </style>
  <?php
}

add_action('acf/input/admin_head', 'repeater_vertical_header');