.about-history{
  padding: 60px 20px;
}

.about-history h2{
    position: relative;
  font-size: 24px;
  font-weight: bold;
  z-index: 1;
  color: #333;
}

.about-history h2::before{
    content: "History";
    position: absolute;
    left: 0;
    top: 30%;
    transform: translateY(-50%);
    font-size: 60px;
    color: rgba(111, 185, 44, 0.5);
    z-index: -1;
    white-space: nowrap;  
}

.about-history h2::after h2::after {
    content: "";
    display: block;
    width: 100px;
    height: 2px;
    background-color: #333;
    margin-top: 10px;
  }

  .since-line {
    font-size: 1.5rem;
    font-weight: bold;
    color: #009245;
    position: relative;
    text-align: right;
  }
  
  .since-line::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 1120px;
    height: 2px;
    background-color: #009245;
  }
  
  
/* タイムライン全体 */
.timeline {
    list-style: none;
    padding: 0;
    margin: 40px 0;
    position: relative;
  }
  
  /* タイムライン縦線 */
  .timeline::before {
    content: '';
    position: absolute;
    left: 110px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #ccc;
  }
  
  /* 各タイムライン項目 */
.timeline > li {
    position: relative;
    padding-left: 150px;
    margin-bottom: 40px;
  }
  
  /* 年表示 */
  .timeline-date {
    position: absolute;
    left: 0;
    top: 4px;
    text-align: right;
    font-weight: bold;
    color: #6fb92c;
    font-size: 1.2em;
    line-height: 1;
  }
  
  /* 内容ボックス */
  .timeline-content {
    position: relative;
    background: #fff;
    padding: 0 20px;
    margin-top: 4px;
  }
  
  /* 丸アイコン */
  .timeline-content::before {
    content: '';
    position: absolute;
    left: -49px;
    top: 3px;
    width: 14px;
    height: 14px;
    background: #6fb92c;
    border-radius: 50%;
    border: 3px solid white;
    z-index: 1;
  }
  
  .about-history-image-bottom {
    display: flex;
    gap: 0;
  }
  
  .about-history-image-bottom > div {
    flex: 1;
    height: 250px; /* 揃えたい高さをここで指定 */
    overflow: hidden;
  }
  
  .about-history-image-bottom img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 縦横に合わせて拡大縮小しつつトリミング */
    display: block;
  }