.youtube-player {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
	border-radius: 20px;
    overflow: hidden;
    max-width: 100%;
    background: #000;
    margin: 5px;
	  
  }

  .youtube-player iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    background: transparent;
  }

  .youtube-player img {
    object-fit: cover;
    display: block;
    left: 0;
    bottom: 0;
    margin: auto;
    max-width: 100%;
    width: 100%;
    position: absolute;
    right: 0;
    top: 0;
    border: none;
    height: auto;
    cursor: pointer;
    -webkit-transition: 0.4s all;
    -moz-transition: 0.4s all;
    transition: 0.4s all;
  }

 .youtube-player img:hover {
  -webkit-filter: brightness(75%);
  -moz-filter: brightness(75%);
  filter: brightness(75%);
}


.youtube-player .play {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -36px;
  margin-top: -36px;
  display: block;
  width: 100px;
  height: 100px;
  padding: 25px;
  border: none;
  text-align: center;
  -webkit-border-radius: 50%;
          border-radius: 50%;
  background: #f00;
  cursor: pointer;
  box-shadow: 0 0 0 0 rgba(255, 6, 6, 0.5);
  -webkit-animation: pulse 1.5s infinite;
}

.youtube-player .play:hover {
  -webkit-animation: none;
}

@-webkit-keyframes pulse {
  0% {
    -moz-transform: scale(0.9);
    -ms-transform: scale(0.9);
    -webkit-transform: scale(0.9);
    transform: scale(0.9);
  }
  70% {
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -webkit-transform: scale(1);
    transform: scale(1);
    box-shadow: 0 0 0 50px rgba(90, 153, 212, 0);
  }
  100% {
    -moz-transform: scale(0.9);
    -ms-transform: scale(0.9);
    -webkit-transform: scale(0.9);
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(90, 153, 212, 0);
  }
}


.youtube-player .play:before {
  content: "";
  position: absolute;
  top: 0;
  left: 5px;
  right: 0;
  bottom: 0;
  margin: auto;
  width: 0;
  height: 0;
  border-left: 32px solid #fff;
  border-top: 22px solid transparent;
  border-bottom: 22px solid transparent;
  

}
.main-timeline {
  font-family: tahoma;
  padding: 20px 0;
  position: relative;
}

.main-timeline::before,
.main-timeline::after {
  content: "";
  height: 40px;
  width: 40px;
  background-color: #e7e7e7;
  border-radius: 50%;
  border: 10px solid #303334;
  transform: translatex(-50%);
  position: absolute;
  left: 50%;
  top: -15px;
  z-index: 2;
}

.main-timeline::after {
  top: auto;
  bottom: 15px;
}

.main-timeline .timeline {
  padding: 35px 0;
  margin-top: -30px;
  position: relative;
  z-index: 1;
}

.main-timeline .timeline::before,
.main-timeline .timeline::after {
  content: "";
  height: 100%;
  width: 50%;
  border-radius: 140px 0 0 140px;
  border: 15px solid #46b2bc;
  border-right: none;
  position: absolute;
  left: 0;
  top: 0;
  z-index: -1;
}

.main-timeline .timeline::after {
  height: calc(100% - 30px);
  width: calc(50% - 12px);
  border-color: #65c7d0;
  left: 12px;
  top: 15px;
}

.main-timeline .timeline-content {
  display: inline-block;
}

.main-timeline .timeline-content:hover {
  text-decoration: none;
}

.main-timeline .timeline-year {
  color: #65c7d0;
  font-size: 50px;
  font-weight: 600;
  display: inline-block;
  transform: translatey(-50%);
  position: absolute;
  top: 50%;
  left: 10%;
}

.main-timeline .timeline-icon {
    color: #65c7d0;
    font-size: 70px;
    display: inline-block;
    transform: translateY(-50%);
    position: absolute;
    left: 34%;
    top: 50%;
}

.main-timeline .content {
  color: #909090;
  width: 50%;
  padding: 20px;
  display: inline-block;
  float: right;
}

.main-timeline .title {
  color: #65c7d0;
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  margin: 0 0 5px 0;
}

.main-timeline .description {
  font-size: 16px;
  margin: 0;
}

.main-timeline .timeline:nth-child(even)::before {
  left: auto;
  right: 0;
  border-radius: 0 110px 110px 0;
  border: 15px solid red;
  border-left: none;
}

.main-timeline .timeline:nth-child(even)::after {
  left: auto;
  right: 12px;
  border-radius: 0 100px 100px 0;
  border: 15px solid green;
  border-left: none;
}

.main-timeline .timeline:nth-child(even) .content {
  float: left;
}

.main-timeline .timeline:nth-child(even) .timeline-year {
    left: auto;
    right: 10%;
}

.main-timeline .timeline:nth-child(even) .timeline-icon {
  left: auto;
  right: 32%;
}

.main-timeline .timeline:nth-child(5n+1)::before {
  border-color: #46b2bc;
}

.main-timeline .timeline:nth-child(5n+1)::after {
  border-color: #65c7d0;
}

.main-timeline .timeline:nth-child(5n+1) .timeline-icon {
  color: #65c7d0;
}

.main-timeline .timeline:nth-child(5n+1) .timeline-year {
  color: #65c7d0;
}

.main-timeline .timeline:nth-child(5n+1) .title {
  color: #65c7d0;
}

.main-timeline .timeline:nth-child(5n+2)::before {
  border-color: #ea3c14;
}

.main-timeline .timeline:nth-child(5n+2)::after {
  border-color: #EF5720;
}

.main-timeline .timeline:nth-child(5n+2) .timeline-icon {
  color: #EA3C14;
}

.main-timeline .timeline:nth-child(5n+2) .timeline-year {
  color: #EA3C14;
}

.main-timeline .timeline:nth-child(5n+2) .title {
  color: #EA3C14;
}

.main-timeline .timeline:nth-child(5n+3)::before {
  border-color: #8CC63E;
}

.main-timeline .timeline:nth-child(5n+3)::after {
  border-color: #6CAF29;
}

.main-timeline .timeline:nth-child(5n+3) .timeline-icon
{
  color: #8CC63E;
}

.main-timeline .timeline:nth-child(5n+3) .timeline-year {
  color: #8CC63E;
}

.main-timeline .timeline:nth-child(5n+3) .title {
  color: #8CC63E;
}

.main-timeline .timeline:nth-child(5n+4)::before {
  border-color: #F99324;
}

.main-timeline .timeline:nth-child(5n+4)::after {
  border-color: #FBB03B;
}

.main-timeline .timeline:nth-child(5n+4) .timeline-icon {
  color: #F99324;
}

.main-timeline .timeline:nth-child(5n+4) .timeline-year {
  color: #F99324;
}

.main-timeline .timeline:nth-child(5n+4) .title {
  color: #F99324;
}

.main-timeline .timeline:nth-child(5n+5)::before {
  border-color: #0071BD;
}

.main-timeline .timeline:nth-child(5n+5)::after {
  border-color: #0050A3;
}

.main-timeline .timeline:nth-child(5n+5) .timeline-icon {
  color: #0071BD;
}

.main-timeline .timeline:nth-child(5n+5) .timeline-year {
  color: #0071BD;
}

.main-timeline .timeline:nth-child(5n+5) .title {
  color: #0071BD;
}

@media screen and (max-width:1200px){
    .main-timeline .timeline:after{ border-radius: 88px 0 0 88px; }
    .main-timeline .timeline:nth-child(even):after{ border-radius: 0 88px 88px 0; }
}
@media screen and (max-width:767px){
    .main-timeline .timeline{ margin-top: -19px; }
    .main-timeline .timeline:before {
        border-radius: 50px 0 0 50px;
        border-width: 10px;
    }
    .main-timeline .timeline:after {
        height: calc(100% - 18px);
        width: calc(50% - 9px);
        border-radius: 43px 0 0 43px;
        border-width:10px;
        top: 9px;
        left: 9px;
    }
    .main-timeline .timeline:nth-child(even):before {
        border-radius: 0 50px 50px 0;
        border-width: 10px;
    }
    .main-timeline .timeline:nth-child(even):after {
        height: calc(100% - 18px);
        width: calc(50% - 9px);
        border-radius: 0 43px 43px 0;
        border-width: 10px;
        top: 9px;
        right: 9px;
    }
    .main-timeline .timeline-icon{ font-size: 60px; }
    .main-timeline .timeline-year{ font-size: 40px; }
}
@media screen and (max-width:479px){
    .main-timeline .timeline-icon{
        font-size: 50px;
        transform:translateY(0);
        top: 25%;
        left: 10%;
    }
    .main-timeline .timeline-year{
        font-size: 25px;
        transform:translateY(0);
        top: 65%;
        left: 9%;
    }
    .main-timeline .content{
        width: 68%;
        padding: 10px;
    }
    .main-timeline .title{ font-size: 18px; }
    .main-timeline .timeline:nth-child(even) .timeline-icon{
        right: 10%;
    }
    .main-timeline .timeline:nth-child(even) .timeline-year{
        right: 9%;
    }
}