.container-header:after {
  background-image: url("../../img/activity/ill_1.png");
  width: 11.8rem;
  height: 14.9rem; }
  @media only screen and (max-width: 767px) {
    .container-header:after {
      width: 8.8rem;
      height: 11.1rem; } }
.container-inner {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap; }
  .container-inner .article-activity {
    width: 30%;
    margin: 0 1.5% 4rem;
    display: flex;
    flex-direction: column; }
    @media only screen and (max-width: 1024px) {
      .container-inner .article-activity {
        width: 48%;
        margin: 0 1% 4rem; } }
  @media only screen and (max-width: 1024px) and (max-width: 767px) {
    .container-inner .article-activity {
      width: 100%;
      margin: 0 0 4rem; } }

    .container-inner .article-activity-header {
      padding: 1rem 0;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column; }
      .container-inner .article-activity-header p {
        font-weight: 700;
        color: #007fdd; }
      .container-inner .article-activity-header-ttl {
        font-size: 2.2rem; }
    .container-inner .article-activity-fig {
      width: 100%;
      aspect-ratio: 16/9;
      border-radius: 1rem;
      border: 0.5rem solid #007fdd;
      margin-bottom: 1rem;
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center; }
    .container-inner .article-activity-txt {
      width: 100%;
      font-size: 1.6rem;
      text-align: left;
      padding: 0 1.5rem; }
    .container-inner .article-activity-btn {
      margin-top: 1.5rem; }
      .container-inner .article-activity-btn a {
        width: 20rem;
        height: 4rem;
        display: flex;
        justify-content: center;
        align-items: center;
        background: #fcca00;
        border-radius: 5rem;
        margin: 0 auto; }
        .container-inner .article-activity-btn a:hover {
          background: #007fdd;
          color: #fff; }