@media only screen and (max-width:900px) {
  .-sp {
    display: block !important;
  }

  .-pc {
    display: none;
  }

  .topics_inner {
    width: 100%;
    max-width: inherit;
    margin: 0 auto;
    padding: 50px 0 0;
  }

  .topics_archive {
    width: 92%;
    margin: 40px auto 0;
    padding-bottom: 50px;
  }

  .topics_archive_lead {
    width: 92%;
    margin: 0 auto;
  }

  .topics_archive_item {
    display: block;
  }

  .topics_archive_item:not(:last-child) {
    margin-bottom: 40px;
  }

  .topics_archive_thumb {
    width: 100%;
    padding-top: 55.9%;
    max-width: inherit;
    height: 100%;
  }

  .topics_archive_body {
    width: 100%;
    max-width: inherit;
    padding-left: 0;
    padding-top: 20px;
    padding-bottom: 50px;
  }

  .topics_archive_title {
    margin-bottom: 10px;
    font-size: 18px;
  }

  .topics_archive_detail {
    margin-bottom: 10px;
  }

  .topics_archive_date {
    font-size: 14px;
  }

  .topics_archive_name {
    font-size: 14px;
  }

  .topics_archive_status {
    font-size: 12px;
  }

  .topics_archive_category {
    margin-left: 10px;
    padding: 3px 12px;
    font-size: 13px;
  }

  .topics_archive_anchor[href] {
    height: 40px;
    width: 150px;
    padding-left: 10px;
    font-size: 15px;
    po
  }

  .topics_pagination {
    margin-top: 40px;
  }

  .topics_pagination_anchor[href] {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .topics_pagination_arrow::after {
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 6px solid transparent;
    border-right: 6px solid #17284c;
    top: calc(50% - 6px);
    left: calc(50% - 10px);
  }

  .ico-next::after {
    left: calc(50% - 2px);
  }
}