/* custom properties */
:root {
  --color-primary: #009b94;
  --color-secondary: #004097;
  --color-link: #193342;
  --color-hover: #009b94;
  --color-white: #fff;
  --color-black: #000;
  --color-gray: #666;
  --color-lightgray: #999;
  --color-lightgray2: #ccc;
  --color-lightgray3: #e4e4e4;
  --color-maintext: #193342;
  --color-subtext: #333;
  --color-bg01: #F3F7FA;
  --color-bg02: #e4f2f2;
  --color-bg03: #BDE5E3;
  --color-bg04: #e8fffe;
  --font-family-sans-serif: YakuHanJPs, Arial, "Helvetica Neue", "Noto Sans JP", sans-serif;
  --font-family-font-awesome: "Font Awesome 5 Free"; }

.list_using {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  margin: 3rem 0 0; }
  @media screen and (max-width: 767px) {
    .list_using {
      display: block; } }
  .list_using > li {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: calc((100% - 8rem)/3);
    height: 100%; }
    @media screen and (max-width: 767px) {
      .list_using > li {
        display: block;
        width: 100%;
        margin: 2rem 0; } }
    .list_using > li .block_title {
      margin-bottom: 2rem;
      font-size: clamp(2rem, 1.855rem + 0.73vw, 2.4rem); }
    .list_using > li .box_img {
      margin-bottom: 2rem;
      flex-shrink: 0; }
    .list_using > li .box_txt {
      height: 100%; }