* {
  margin: 0;
  padding: 0;
}
html,
body {
  transition: all 1s;
  scroll-behavior: smooth;
}
.opacity-hide {
  opacity: 0;
}
.content {
  width: 1200rem;
  margin: auto;
  position: relative;
}
.main {
  margin-top: 48rem;
}
.left-side {
  position: absolute;
  left: -244rem;
  z-index: 3;
  height: 2873rem;
}
.left-side #sideNav {
  width: 264rem;
  height: 849rem;
  background: url(../assets/event-bg.png);
  background-size: cover;
  background-repeat: no-repeat;
  position: sticky;
  top: 78rem;
  padding-top: 24rem;
}
.left-side #sideNav .item {
  height: 55rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: FZ;
  font-size: 20rem;
  color: #5E4A23;
  margin: 0 10rem;
  cursor: pointer;
  position: relative;
}
.left-side #sideNav .item:hover {
  color: #9A3312;
}
.left-side #sideNav .item.active {
  background: url(../assets/event-side-bg.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  color: #FFFAEB;
}
.left-side #sideNav .item:not(:last-child):after {
  content: '';
  position: absolute;
  bottom: 0;
  height: 1px;
  width: 100%;
  background: url(../static/history/event-side-line.png);
  background-position: center;
  background-repeat: no-repeat;
}
.floor {
  font-size: 16rem;
  color: #5e4a23;
  font-family: PingFangSC-Regular;
  background: url(../static/history/background_v.jpg) repeat-y center top;
  position: sticky;
  top: 70rem;
  background-size: cover;
}
.floor h2 {
  font-size: 48rem;
  color: #9a3312;
  text-align: center;
  padding-bottom: 96rem;
  padding-top: 48rem;
}
.time-line {
  margin-left: 78rem;
  z-index: 1;
}
.time-line .line {
  height: 24rem;
  width: 24rem;
  display: flex;
  align-items: center;
  z-index: 1;
}
.time-line .line .bg-red-line {
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  flex: 1;
}
.time-line .line .bg-red-line .wide {
  width: 550rem;
  height: 9rem;
  background-color: #9A3312;
  border-radius: 9rem;
  transition: all 0.05s;
  margin-top: 1rem;
}
.time-line .line .bg-red-line .thin {
  flex: 1;
  height: 3rem;
  width: 540rem;
  background-color: #9A3312;
  border-radius: 3rem;
  transition: all 0.05s;
}
.time-line .time-name {
  height: 117rem;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: -78rem;
  z-index: 2;
  overflow: hidden;
}
.time-line .time-name * {
  transition: all 0.3s;
}
.time-line .time-name > a {
  height: 117rem;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  cursor: pointer;
}
.time-line .time-name > a:hover > div:nth-child(1) {
  color: #9A3312;
}
.time-line .time-name > a:hover > div:nth-child(3) {
  color: #9A3312;
}
.time-line .time-name > a .point {
  width: 12rem;
  height: 12rem;
  background-color: #9A3312;
  border-radius: 50%;
}
.time-line .time-name > a .point.cur {
  height: 24rem;
  width: 24rem;
  background: url(../assets/squre.png);
  background-repeat: no-repeat;
  background-position: 0 0 ;
  background-size: 100% 100%;
  z-index: 3;
}
.time-line .time-name > a > div:nth-child(1) {
  font-family: FZ;
  font-size: 24rem;
  color: #5E4A23;
  padding: 8rem 0;
}
.time-line .time-name > a > div:nth-child(3) {
  font-family: FZ;
  font-size: 24rem;
  color: #5E4A23;
}
.time-line .time-name > a.active > div:nth-child(1) {
  color: #FFFAEB;
  background: #9A3312;
  border-radius: 23rem;
  padding: 8rem 32rem;
}
.time-line .time-name > a.active > div:nth-child(3) {
  color: #9A3312;
}
.time-line .time-name > a.active:hover > div:nth-child(1) {
  color: #FFFAEB;
}
.time-line .time-name > a.disabled {
  cursor: not-allowed;
}
.time-line .time-name > a.disabled > div:nth-child(1) {
  color: #5A5A5A;
}
.time-line .time-name > a.disabled > div:nth-child(3) {
  color: #5A5A5A;
}
.time-line .time-name > a.disabled .point {
  background: url(../assets/squre-disable.png);
  background-repeat: no-repeat;
  background-position: 0 0 ;
  background-size: 100% 100%;
}
.list-area {
  margin-left: 78rem;
  margin-top: 48rem;
}
.list-area .item {
  height: 64rem;
  display: flex;
  align-items: center;
  padding-left: 39rem;
}
.list-area .item .time {
  height: 22rem;
  font-family: FZ;
  font-size: 20rem;
  color: #9A3312;
}
.list-area .item .describ {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 16rem;
  color: #5E4A23;
  margin-left: 8rem;
  flex: 1;
  margin-right: 120rem;
  line-height: 1.4;
}
.list-area .item:nth-child(odd) {
  background-color: #dac69c33;
}