@media screen and (max-width: 900px) {
  .commonarea {
    padding: 25px;
  }
  .commoninner {
    max-width: initial;
    padding: 0;
  }
  .commonltitle > span {
    display: block;
  }
  .index_messagearea {
    padding: 0;
    background-image: none;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .index_messageinner {
    max-width: initial;
    width: 90%;
    margin: 0 auto;
    padding: 20px 0;
  }
  .index_mayorinner {
    width: 100%;
    text-align: center;
  }
  .index_videoarea {
    padding: 65px 0;
  }
  .index_videoinner {
    max-width: initial;
    text-align: center;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    -ms-flex-line-pack: justify;
        align-content: space-between;
  }
  .index_videoinner .leftcard {
    margin: 0 auto;
  }
  .index_videoinner .rightcard {
    max-width: initial;
    margin: 20px auto;
  }
  .index_videoinner h2 {
    margin-bottom: 20px;
  }
  .index_videoinner dt {
    margin-bottom: 5px;
  }
  .index_videoinner dd {
    margin: 0 50px;
  }
  .pickup_listinner ul li {
    width: calc(50% - 20px);
    margin: 0 8px 20px;
  }
  .pickup_listinner ul:after {
    width: calc(50% - 20px);
  }
}