/******************* index *******************/
.main {
  background-color: #f2f2ef;
  background-image: url(../img/common/under_main.jpg);
  background-position: 50% 0;
  height: 284px;
  text-align: center;
  background-repeat: no-repeat;
  margin-bottom: 170px;
  padding: 110px 0 0; }
  .main h1 {
    font-size: 40px;
    font-size: 4rem;
    font-weight: bold;
    color: #82858a;
    margin-bottom: 10px;
    margin-bottom: 1rem;
    font-family: "Open Sans Condensed"; }
  .main .alias {
    font-size: 12px;
    font-size: 1.2rem;
    color: #82858a; }

.whiteBox {
  position: relative; }
  .whiteBox_ic {
    position: absolute;
    top: -100px;
    left: 50%;
    margin-left: -11.49533%;
    -moz-box-shadow: 0 0 88px 0 rgba(68, 72, 83, 0.33);
    -webkit-box-shadow: 0 0 88px 0 rgba(68, 72, 83, 0.33);
    box-shadow: 0 0 88px 0 rgba(68, 72, 83, 0.33); }
    .whiteBox_ic img {
      display: block; }
  .whiteBox_inner {
    padding: 230px 70px 70px;
    padding: 23rem 7rem 7rem;
    background-image: url(../img/history/arrow.png);
    background-repeat: no-repeat;
    background-position: 50% 170px; }
  .whiteBox h2 {
    font-size: 24px;
    font-size: 2.4rem;
    font-weight: normal; 
    margin-bottom: 2rem;
    line-height: 1.3;
  }
  .whiteBox p {
    line-height: 2; }

.year1960 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year1960 .whiteBox {
    margin-right: 0; }
    .year1960 .whiteBox_inner {
      padding: 194px 70px 70px;
      padding: 19.4rem 7rem 7rem; }

.year1970 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year1970 .whiteBox {
    margin-left: 0; }

.year1980 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year1980 .whiteBox {
    margin-right: 0; }

.year1990 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year1990 .whiteBox {
    margin-left: 0; }

.year2000 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year2000 .whiteBox {
    margin-right: 0; }

.year2010 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year2010 .whiteBox {
    margin-left: 0; }

.year2015 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year2015 .whiteBox {
    margin-right: 0; }

.year2022 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year2022 .whiteBox {
    margin-left: 0; }

.year2024 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year2024 .whiteBox {
    margin-right: 0; }

.year2017 {
  max-width: 1070px;
  margin: 0 auto 60px; }
  .year2017 .whiteBox {
    margin-left: 0; }

/* sp */
@media screen and (max-width: 640px) {
  body {
    font-size: 14px; }

  .main {
    height: 44.375vw;
    margin-bottom: 30vw;
    padding: 17.1875vw 0 0;
    background-size: cover; }
    .main h1 {
      font-size: 50px;
      font-size: 5rem; }
    .main .alias {
      font-size: 25px;
      font-size: 2.5rem; }
  .whiteBox h2 {
    font-size: 5.5vw;
    margin-bottom: 4rem;
    margin-bottom: 6.25vw;
	line-height: 1.5;}

  .year1960,
  .year1970,
  .year1980,
  .year1990,
  .year2000,
  .year2010,
  .year2015,
  .year2022,
  .year2024,
  .year2017 {
    margin: 0 auto 9.375vw; }
    .year1960 .whiteBox,
    .year1970 .whiteBox,
    .year1980 .whiteBox,
    .year1990 .whiteBox,
    .year2000 .whiteBox,
    .year2010 .whiteBox,
    .year2015 .whiteBox,
    .year2022 .whiteBox,
    .year2024 .whiteBox,
    .year2017 .whiteBox {
      margin-right: auto;
      margin-left: auto; }

  .year2024 {
    margin: 0 auto 23.4375vw; }

  .whiteBox_ic {
    position: absolute;
    top: -20vw;
    left: 50%;
    margin-left: -18.75%;
    width: 41.37931%; }

  .year1960 .whiteBox_inner,
  .whiteBox_inner {
    padding: 25vw 4.6875% 8rem;
    padding: 25vw 4.6875% 16.5vw;
    background-position: 50% 20vw; }

  .year1960 .whiteBox_inner h2 {
    margin-bottom: 2rem; } }