.timeline ul li {
  list-style-type: none;
  position: relative;
  width: 6px;
  margin: 0 auto;
  padding-top: 30px;
  background: #fff;
}
.timeline ul li::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 20px;
  height: 20px;
  z-index: 2;
  background: #eee;
}
.timeline ul li div {
  position: relative;
  bottom: 0;
  width: 400px;
  padding: 20px;
  background: #fff;
  box-shadow: 4px 13px 30px 1px rgba(252, 56, 56, 0.2);
  border-radius: 5px;
  display: flex;
  align-items: center;
}
.timeline ul li div time {
  position: absolute;
  background: #FFB54C;
  width: 80px;
  height: 30px;
  top: -15px;
  border-radius: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
  letter-spacing: 2px;
}
.timeline ul li div div {
  height: 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.timeline ul li div div p {
  text-align: center;
}
.timeline ul li div .discovery {
  margin-right: 10px;
}
.timeline ul li:nth-of-type(odd) > div {
  left: 45px;
}
.timeline ul li:nth-of-type(even) > div {
  left: -439px;
}

.timeline ul li div {
  visibility: hidden;
  opacity: 0;
  transition: all 0.5s ease-in-out;
}
.main-timeline:nth-of-type(odd) .timeline{
  transform: translate3d(0px, 0px, -100px) rotate(0deg);
}
.main-timeline:nth-of-type(even) .timeline{
  transform: translate3d(0px, 0px, 100px) rotate(0deg);
}
.main-timeline div.in-view {
  transform: none;
  visibility: visible;
  opacity: 1;
}


@media screen and (max-width: 900px) {  
  .timeline ul li {
    margin-left: 20px;
  }
  .timeline ul li div {
    width: calc(100vw - 91px);
  }
  .timeline ul li:nth-of-type(even) > div {
    left: 45px;
  }
}






.main-timeline{ position: relative; }
.main-timeline:before,
.main-timeline:after{
    content: "";
    display: block;
    width: 100%;
    clear: both;
}
.main-timeline:before{
    content: "";
    width: 3px;
    height: 100%;
    background: #D3CFCD;
    position: absolute;
    top: 0;
    left: 50%;
}
.main-timeline .timeline{
    width: 50%;
    float: left;
    position: relative;
    z-index: 1;
}
.main-timeline .timeline:before,
.main-timeline .timeline:after{
    content: "";
    display: block;
    width: 100%;
    clear: both;
}
.main-timeline .timeline:first-child:before,
.main-timeline .timeline:last-child:before{
    content: "";
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: #fff;
    border: 4px solid #D3CFCD;
    position: absolute;
    top: 0;
    right: -14px;
    z-index: 1;
}
.main-timeline .timeline:last-child:before{
    top: auto;
    bottom: 0;
}
.main-timeline .timeline:last-child:nth-child(even):before{
    right: auto;
    left: -12px;
    bottom: -2px;
}
.main-timeline .timeline-content{
    text-align: center;
    margin-top: 8px;
    position: relative;
    transition: all 0.3s ease 0s;
}
.main-timeline .timeline-content:before{
    content: "";
    width: 100%;
    height: 5px;
    background: #D3CFCD;
    position: absolute;
    top: 88px;
    left: 0;
    z-index: -1;
}
.main-timeline .circle{
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: #fff;
    border: 8px solid #D3CFCD;
    float: left;
    margin-right: 25px;
    position: relative;
}
.main-timeline .circle:before{
    content: "";
    width: 26px;
    height: 30px;
    background: rgba(211,207,205,1);
    margin: auto;
    position: absolute;
    top: 0;
    right: -33px;
    bottom: 0;
    z-index: -1;
    box-shadow: inset 7px 0 9px -7px #444;
}
.main-timeline .circle span{
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    line-height: 268px;
    font-size: 80px;
    color: #454344;
}
.main-timeline .circle span:before,
.main-timeline .circle span:after{
    content: "";
    width: 28px;
    height: 50px;
    background: #fff;
    border-radius: 0 0 0 21px;
    margin: auto;
    position: absolute;
    top: -54px;
    right: -33px;
    bottom: 0;
    z-index: -1;
}
.main-timeline .circle span:after{
    border-radius: 21px 0 0 0;
    top: 0;
    bottom: -56px;
}
.main-timeline .circle .img{
    vertical-align: initial;
    border-radius: 50%;
}
.main-timeline .content{
    display: table;
    padding-right: 40px;
    position: relative;
}
.main-timeline .year {
    display: block;
    padding: 20px;
    margin: 0px 0 30px 0;
    border-radius: 7px;
    font-size: 35px;
    color: #000;
    font-weight: bolder;
}
.main-timeline .title{
    font-size: 25px;
    font-weight: bold;
    color: #D3CFCD;
    margin-top: 0;
}
.main-timeline .description{
    font-size: 14px;
    color: #333;
    text-align: justify;
}
.main-timeline .icon{
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: #fff;
    border: 4px solid #D3CFCD;
    position: absolute;
    top: 78px;
    right: -14px;
}
.main-timeline .icon:before{
    content: "";
    width: 15px;
    height: 25px;
    background: #D3CFCD;
    margin: auto;
    position: absolute;
    top: -1px;
    left: -15px;
    bottom: 0;
    z-index: -1;
}
.main-timeline .icon span:before,
.main-timeline .icon span:after{
    content: "";
    width: 21px;
    height: 25px;
    background: #fff;
    border-radius: 0 0 21px 0;
    margin: auto;
    position: absolute;
    top: -30px;
    left: -15px;
    bottom: 0;
    z-index: -1;
}
.main-timeline .icon span:after{
    border-radius: 0 21px 0 0;
    top: 0;
    left: -15px;
    bottom: -30px;
}
.main-timeline .timeline:nth-child(2n) .timeline-content,
.main-timeline .timeline:nth-child(2n) .circle{
    float: right;
}
.main-timeline .timeline:nth-child(2n) .circle{
    margin: 0 0 0 25px;
}
.main-timeline .timeline:nth-child(2n) .circle:before{
    right: auto;
    left: -33px;
    box-shadow: -7px 0 9px -7px #444 inset;
}
.main-timeline .timeline:nth-child(2n) .circle span:before,
.main-timeline .timeline:nth-child(2n) .circle span:after{
    right: auto;
    left: -33px;
    border-radius: 0 0 21px 0;
}
.main-timeline .timeline:nth-child(2n) .circle span:after{
    border-radius: 0 21px 0 0;
}
.main-timeline .timeline:nth-child(2n) .content{
    padding: 0 0 0 40px;
    margin-left: 2px;
}
.main-timeline .timeline:nth-child(2n) .icon{
    right: auto;
    left: -14px;
}
.main-timeline .timeline:nth-child(2n) .icon:before,
.main-timeline .timeline:nth-child(2n) .icon span:before,
.main-timeline .timeline:nth-child(2n) .icon span:after{
    left: auto;
    right: -15px;
}
.main-timeline .timeline:nth-child(2n) .icon span:before{
    border-radius: 0 0 0 21px;
}
.main-timeline .timeline:nth-child(2n) .icon span:after{
    border-radius: 21px 0 0 0;
}
.main-timeline .timeline:nth-child(2){
    margin-top: 180px;
}
.main-timeline .timeline:nth-child(odd){
    margin: -175px 0 0 0;
}
.main-timeline .timeline:nth-child(even){
    margin-bottom: 180px;
}
.main-timeline .timeline:first-child,
.main-timeline .timeline:last-child:nth-child(even){
    margin: 0;
}
@media only screen and (max-width: 990px){
    .main-timeline:before{ left: 100%; }
    .main-timeline .timeline{
        width: 100%;
        float: none;
        margin-bottom: 20px !important;
    }
    .main-timeline .timeline:first-child:before,
    .main-timeline .timeline:last-child:before{
        left: auto !important;
        right: -13px !important;
    }
    .main-timeline .timeline:nth-child(2n) .circle{
        float: left;
        margin: 0 25px 0 0;
    }
    .main-timeline .timeline:nth-child(2n) .circle:before{
        right: -33px;
        left: auto;
        box-shadow: 7px 0 9px -7px #444 inset;
    }
    .main-timeline .timeline:nth-child(2n) .circle span:before,
    .main-timeline .timeline:nth-child(2n) .circle span:after{
        right: -33px;
        left: auto;
        border-radius: 0 0 0 21px;
    }
    .main-timeline .timeline:nth-child(2n) .circle span:after{
        border-radius: 21px 0 0 0;
    }
    .main-timeline .timeline:nth-child(2n) .content{
        padding: 0 40px 0 0;
        margin-left: 0;
    }
    .main-timeline .timeline:nth-child(2n) .icon{
        right: -14px;
        left: auto;
    }
    .main-timeline .timeline:nth-child(2n) .icon:before,
    .main-timeline .timeline:nth-child(2n) .icon span:before,
    .main-timeline .timeline:nth-child(2n) .icon span:after{
        left: -15px;
        right: auto;
    }
    .main-timeline .timeline:nth-child(2n) .icon span:before{
        border-radius: 0 0 21px 0;
    }
    .main-timeline .timeline:nth-child(2n) .icon span:after{
        border-radius: 0 21px 0 0;
    }
    .main-timeline .timeline:nth-child(2),
    .main-timeline .timeline:nth-child(odd),
    .main-timeline .timeline:nth-child(even){
        margin: 0;
    }
}
@media only screen and (max-width: 480px){
    .main-timeline:before{ left: 0; }
    .main-timeline .timeline:first-child:before,
    .main-timeline .timeline:last-child:before{
        left: -12px !important;
        right: auto !important;
    }
    .main-timeline .circle,
    .main-timeline .timeline:nth-child(2n) .circle{
        width: 130px;
        height: 130px;
        float: none;
        margin: 0 auto;
    }
    .main-timeline .timeline-content:before{
        width: 99.5%;
        top: 68px;
        left: 0.5%;
    }
    .main-timeline .circle span{
        line-height: 115px;
        font-size: 60px;
    }
    .main-timeline .circle:before,
    .main-timeline .circle span:before,
    .main-timeline .circle span:after,
    .main-timeline .icon{
        display: none;
    }
    .main-timeline .content,
    .main-timeline .timeline:nth-child(2n) .content{
        padding: 0 10px;
    }
    .main-timeline .year{
        margin-bottom: 15px;
    }
    .main-timeline .description{
        text-align: center;
    }
}