.common-header-wrapper {
  background-image: url(../img/history/bg-history-header.svg);
}

.history-contents {
  text-align: justify;
  width: 38%
}

.history-contents-exp {
  background: #fff;
  font-size: .8em;
  line-height: 1.5;
  padding: 0 1em;
}

.history-contents-senryu {
  background: #fff;
  padding: .5em 0;
}

.history-contents-title {
  background: #fff;
  border-bottom: 2px solid;
  font-size: .8em;
}

[class*="history-contents-"] {
  display: block;
}

.history-even .history-contents {
  padding-right: 1em;
}

.history-odd .history-contents {
  padding-left: 1em;
}

.history-date {
  background-image: url(../img/history/bg-history-lr.svg);
  background-repeat: no-repeat;
  background-size: auto 50px;
  height: 50px;
  letter-spacing: .1em;
  transform: rotate(9deg);
  width: 24%;
}

.history-even .history-date {
  background-position: left center;
  padding-left: 1.5em;
}

.history-odd .history-date {
  background-position: right center;
  padding-right: 1.5em;
  text-align: right;
}

.history-even {
  flex-direction: row-reverse;
}

.history-img {
  text-align: center;
  width: 38%;
}

.history-img img {
  vertical-align: middle;
  width: 100%;
}

.history-wrapper {
  background-image: url(../img/history/bg-history.svg);
  background-position: center center;
  background-repeat: repeat-y;
  background-size: 10px auto;
}

h2[id*="history-"] {
  background: #fff;
  margin-bottom: .5em;
  text-align: center;
}

ul[id*="history-"] {
  align-items: center;
  box-sizing: border-box;
  display: flex;
  justify-content: space-around;
  margin-bottom: 3em;
}

@media (max-width: 520px) {
  [class*="history-"] .history-contents {
    padding: 0;
  }
  
  .history-date {
    background-image: none;
    font-size: .8em;
  }

  .history-even .history-date {
    padding-right: 1.5em;
    text-align: right;
  }

  ul[id*="history-"] {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  ul[id*="history-"] li {
    flex-grow: 1;
    width: 100%;
    box-sizing: border-box;
  }

  ul[id*="history-"] li:nth-of-type(2) {
    order: -1;
  }
}