.history-top-background {
  width: 100%;
  max-width: 1440px;
  height: calc(100vw * 0.306);
  max-height: 440px;
  background-position: center top;
  background-repeat: no-repeat;
  background-size: contain;
  background-image: url(../image/TOP-PC/header-history.jpg);
  position: relative;
}

.history-top-background-image {
  display: flex;
  align-items: center;
  position: absolute;
  bottom: -95px;
  justify-content: center;
  width: 100%;
  height: calc(100vw * 0.09347222222);
  max-height: 134px;
  background-position: center top;
  background-repeat: no-repeat;
  background-size: contain;
  background-image: url(../image/TOP-PC/header_r2_c1.jpg);
}

.history-top-background-image-child h1 {
  color: rgb(0, 100, 183);
  font-size: 30px;
  font-family: YuGothicStd, sans-serif;
  font-weight: bold;
  text-align: center;
  margin-top: 23px;
}

.history-top-background-image-child span {
  color: rgb(0, 100, 183);
  font-size: 20px;
  font-family: Helvetica;
  text-align: center;
}

.history-wrapper table {
  margin-top: 117px;
  margin-bottom: 145px;
  margin-right: 13%;
  margin-left: 13%;
  border-color: rgb(0, 100, 183);
  border-bottom-style: none;
  border-right-style: hidden;
  border-left-style: hidden;
}
.history-image {
  margin-bottom: 30px;
}

.history-image-space {
  margin-right: 20px;
}

.history-cell {
  border-left-style: none;
  border-top-style: none;
  border-bottom-style: none;
}

.history-bottom-style-none {
  border-bottom-style: none;
}

.history-container {
  margin-top: 26px;
}

.history-year {
  color: rgb(0, 100, 183);
  font-size: 25px;
  font-family: YuGothicStd, sans-serif;
  width: 15%;
  height: 100%;
  padding-top: 26px;
  padding-left: 25px;
}

.history-mounth-pc {
  border-right-style: none;
  color: rgb(0, 100, 183);
  font-size: 25px;
  font-family: YuGothicStd, sans-serif;
  width: 15%;
  padding-top: 26px;
  padding-left: 25px;
  border-top-style: none;
  border-bottom-style: none;
}
.history-mounth-sp {
  display: none;
}

.history-subtitle {
  color: rgb(0, 100, 183);
  font-size: 25px;
  margin-top: 15px;
  font-family: YuGothicStd, sans-serif;
  font-weight: bold;
}

.history-paragraph {
  color: rgb(0, 100, 183);
  margin-top: 26px;
  font-size: 16px;
  font-family: YuGothicStd, sans-serif;
  margin-bottom: 55px;
  line-height: 2em;
}

.history-border-top {
  border-top: 1px solid rgb(0, 100, 183);
}

@media only screen and (max-width: 1000px) {
  .history-wrapper {
    margin-top: 0px;
    margin-bottom: 78px;
  }
  .history-top-background {
    background-size: contain;
  }
  .history-top-background-image {
    bottom: -35px;
  }
  .history-wrapper table {
    width: 90%;
    margin-top: 50px;
    margin-left: 3.6%;
    margin-right: 3.066666666%;
  }

  .history-top-background-image-child h1 {
    font-size: 12px;
    margin-top: 0;
  }

  .history-top-background-image-child span {
    font-size: 10px;
  }

  .history-year {
    color: rgb(0, 100, 183);
    font-family: YuGothicStd, sans-serif;
    width: 10%;
    padding-top: 26px;
    padding-left: 5px;
    height: 200px;
  }
  .history-year span {
    -ms-writing-mode: tb-rl;
    text-orientation: upright; /* すべて縦方向に表示 */
    writing-mode: vertical-rl;
    -webkit-text-orientation: upright;
    font-size: 15px;
    height: 200px;
  }
  .history-container {
    padding-left: 10px;
  }

  .history-mounth-pc {
    display: none;
  }

  .history-mounth-sp {
    display: block;
    color: rgb(0, 100, 183);
    font-size: 12px;
    font-family: YuGothicStd, sans-serif;
  }

  .history-subtitle {
    color: rgb(0, 100, 183);
    font-size: 15px;
    margin-top: 10px;
    font-family: YuGothicStd, sans-serif;
    font-weight: bold;
  }

  .history-paragraph {
    color: rgb(0, 100, 183);
    margin-top: 3px;
    font-size: 11px;
    font-family: YuGothicStd, sans-serif;
    margin-bottom: 25px;
  }

  .history-image-space {
    margin-right: 0;
  }
}