.content-box {
  width: 75%;
  margin: 0 0 220px auto;
}

@media (max-width: 900px) {
  .content-box {
    width: calc(100% - 100px);
    margin: 0 auto 220px;
  }
}

@media (max-width: 600px) {
  .content-box {
    width: calc(100% - 60px);
    margin: 0 auto 90px;
  }
}

.detail-content-box {
  padding-top: 10%;
  -webkit-transition: .5s;
  transition: .5s;
}

@media (max-width: 900px) {
  .detail-content-box {
    padding-top: 240px;
  }
}

@media (max-width: 600px) {
  .detail-content-box {
    padding-top: 200px;
  }
}

@media (max-width: 500px) {
  .detail-content-box {
    padding-top: 180px;
  }
}

.detail-content-box img {
  max-width: 100%;
  display: inline-block;
}

.detail-content-box .content-inner {
  width: 90%;
}

@media (max-width: 900px) {
  .detail-content-box .content-inner {
    width: 100%;
  }
}

.main-introduction {
  margin-bottom: 120px;
}

@media (max-width: 700px) {
  .main-introduction {
    margin-bottom: 90px;
  }
}

@media (max-width: 460px) {
  .main-introduction {
    margin-bottom: 50px;
  }
}

.main-introduction .image-box {
  margin-bottom: 60px;
  width: 70%;
}

@media (max-width: 700px) {
  .main-introduction .image-box {
    width: 100%;
    margin-bottom: 50px;
  }
}

@media (max-width: 460px) {
  .main-introduction .image-box {
    margin-bottom: 20px;
  }
}

.main-introduction .is-description {
  font-size: 1rem;
  line-height: 24px;
  line-height: 30px;
}

@media (max-width: 700px) {
  .main-introduction .is-description {
    font-size: 1.5rem;
    line-height: 32px;
    line-height: 48px;
  }
}

@media (max-width: 460px) {
  .main-introduction .is-description {
    font-size: 0.875rem;
    line-height: 22px;
    line-height: 28px;
  }
}

.year-item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.year-item:not(:last-child) .year-photo {
  margin-bottom: 110px;
}

@media (max-width: 700px) {
  .year-item:not(:last-child) .year-photo {
    margin-bottom: 90px;
  }
}

@media (max-width: 460px) {
  .year-item:not(:last-child) .year-photo {
    margin-bottom: 60px;
  }
}

.year-item:last-child .line-box span {
  height: calc( 100% - 40px);
}

.line-box {
  color: #000;
  position: relative;
  margin-right: 60px;
  -webkit-transform: translateY(40px);
          transform: translateY(40px);
}

@media (max-width: 460px) {
  .line-box {
    margin-right: 40px;
    -webkit-transform: translateY(30px);
            transform: translateY(30px);
  }
}

.line-box .fa-circle {
  position: absolute;
  top: 0;
  left: 50%;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
  font-size: 30px;
}

@media (max-width: 460px) {
  .line-box .fa-circle {
    font-size: 25px;
  }
}

.line-box .fa-circle.white {
  top: 7px;
  color: #FFF;
  font-size: 15px;
}

@media (max-width: 460px) {
  .line-box .fa-circle.white {
    font-size: 10px;
  }
}

.line-box span {
  width: 3px;
  height: 100%;
  display: inline-block;
  background: #000;
}

@media (max-width: 460px) {
  .line-box span {
    width: 2px;
  }
}

.year-title,
.year-description {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin-bottom: 30px;
}

@media (max-width: 700px) {
  .year-title,
  .year-description {
    display: block;
    margin-bottom: 20px;
  }
}

@media (max-width: 460px) {
  .year-title,
  .year-description {
    margin-bottom: 10px;
  }
}

.year-title span {
  font-size: 7.5rem;
  line-height: 128px;
  line-height: 110px;
  display: inline-block;
  margin-right: 30px;
  min-width: 280px;
  font-weight: 200;
  letter-spacing: 10px;
  -webkit-transition: .5s;
  transition: .5s;
}

@media (max-width: 1100px) {
  .year-title span {
    font-size: 5rem;
    line-height: 88px;
    min-width: 200px;
  }
}

@media (max-width: 700px) {
  .year-title span {
    font-size: 7.5rem;
    line-height: 128px;
    min-width: 280px;
    margin: 0 0 20px 0;
  }
}

@media (max-width: 460px) {
  .year-title span {
    font-size: 4.5rem;
    line-height: 80px;
    min-width: 180px;
    margin: 0 0 10px 0;
  }
}

.year-title h5 {
  font-size: 2rem;
  line-height: 40px;
  font-weight: bold;
}

@media (max-width: 460px) {
  .year-title h5 {
    font-size: 1.25rem;
    line-height: 28px;
  }
}

.year-description .img-box {
  width: 280px;
  min-width: 280px;
  margin-right: 30px;
  -webkit-transition: .5s;
  transition: .5s;
}

@media (max-width: 1100px) {
  .year-description .img-box {
    width: 200px;
    min-width: 200px;
  }
}

@media (max-width: 700px) {
  .year-description .img-box {
    width: 280px;
    min-width: 280px;
    margin: 0 0 20px 0;
  }
}

@media (max-width: 460px) {
  .year-description .img-box {
    width: 180px;
    min-width: 180px;
  }
}

.year-description .img-box img {
  width: 100%;
}

.year-description .text {
  font-size: 1rem;
  line-height: 24px;
  line-height: 35px;
  margin-bottom: 30px;
}

@media (max-width: 700px) {
  .year-description .text {
    font-size: 1.5rem;
    line-height: 32px;
    line-height: 48px;
  }
}

@media (max-width: 460px) {
  .year-description .text {
    font-size: 0.875rem;
    line-height: 22px;
    line-height: 28px;
    margin-bottom: 20px;
  }
}

.year-description .more {
  background: #000;
  color: #FFF;
  padding: 8px 20px;
  border-radius: 5px;
  vertical-align: middle;
  display: inline-block;
  font-size: 1.125rem;
  line-height: 26px;
}

@media (max-width: 460px) {
  .year-description .more {
    font-size: 0.75rem;
    line-height: 20px;
    margin-bottom: 10px;
  }
}

.year-description .more p {
  margin-right: 5px;
  display: inline-block;
}

.year-description .more img {
  width: 15px;
  vertical-align: middle;
}

.year-photo {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

@media (max-width: 700px) {
  .year-photo {
    display: block;
  }
}

.year-photo img {
  width: calc( 50% - 15px);
}

@media (max-width: 700px) {
  .year-photo img {
    width: 100%;
  }
}

/*.year-photo img:not(:last-child) {*/
/*  margin-bottom: 20px;*/
/*}*/

@media (max-width: 460px) {
  .year-photo img:not(:last-child) {
    margin-bottom: 10px;
  }
}