<div class="container-line">
  <div class="container-line-center">
    <div class="line-item one"></div>
    <div class="line-item two"></div>
    <div class="line-item three"></div>
    <div class="line-item four"></div>
  </div>
</div>

.container-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
    margin: 0 auto
}

.container-line-center {
    width: 70%;
    margin: 0 auto;
    position: relative;
    height: 100%
}

.line-item {
    float: left;
    width: 25%;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    height: 100%;
    position: relative
}

.line-item,.line-item:first-child {
    border-right: 1px solid rgba(0,0,0,.1)
}

.line-item.one:before {
    content: "";
    position: absolute;
    top: 0;
    right: -3px;
    width: 5px;
    height: 30px;
    -webkit-animation: scroll 8s ease-out infinite;
    animation: scroll 8s ease-out infinite;
    background: #ffe000
}

.line-item.two:before {
    top: 10%;
    -webkit-animation: scroll 6s ease-out infinite;
    -mox-animation: scroll 6s ease-out infinite;
    animation: scroll 6s ease-out infinite
}
.line-item.three:before {
    top: 5%;
    width: 5px;
    height: 30px;
    -webkit-animation: scroll 6s ease-out infinite;
    -mox-animation: scroll 6s ease-out infinite;
    animation: scroll 6s ease-out infinite;
   background: #ffe000;
}
.line-item.four:before,.line-item.two:before,.line-item.three:before {
    content: "";
    position: absolute;
    right: -2px;
    width: 5px;
    height: 30px;
    background: #ffe000
}

.line-item.four:before {
    top: 0;
    -webkit-animation: scroll 5s ease-out infinite;
    animation: scroll 5s ease-out infinite
}

@keyframes scroll {
  0%, 100% {
    transform: translate(0, 0);
  }
  
  50% {
    transform: translate(0, 200px);
  }
   100% {
    transform: translate(0, 0);
  }
}