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JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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HTML

            
              <div class="container">
<div class="row timeline">
  <div class="timeline-bar"></div>
  <div class="col-sm-6 timeline-left">
  <div class="timeline-container">
    <div class="timeline-circle"><i class="fa fa-code" aria-hidden="true"></i></div>
    <div class="timeline-arrow"></div>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. A ad suscipit deserunt fuga aut corporis officia! Vitae molestias, eligendi cum velit necessitatibus dolorem, repellat inventore perferendis, nostrum reiciendis doloremque quisquam.</p>
    </div>
  </div>
  <div class="col-sm-6 col-sm-offset-6 timeline-right">
  <div class="timeline-container">
    <div class="timeline-circle"><i class="fa fa-code" aria-hidden="true"></i></div>
    <div class="timeline-arrow"></div>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quisquam, accusamus perspiciatis quo repellat tempora corporis fuga, delectus facere nisi enim in iusto inventore veritatis optio debitis deleniti commodi asperiores. Consequatur.</p>
    </div>
  </div>
  </div>
  <div class="row timeline">
  <div class="timeline-bar"></div>
  <div class="col-sm-6 timeline-left">
  <div class="timeline-container">
    <div class="timeline-circle"><i class="fa fa-code" aria-hidden="true"></i></div>
    <div class="timeline-arrow"></div>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. A ad suscipit deserunt fuga aut corporis officia! Vitae molestias, eligendi cum velit necessitatibus dolorem, repellat inventore perferendis, nostrum reiciendis doloremque quisquam.</p>
    </div>
  </div>
  <div class="col-sm-6 col-sm-offset-6 timeline-right">
  <div class="timeline-container">
    <div class="timeline-circle"><i class="fa fa-code" aria-hidden="true"></i></div>
    <div class="timeline-arrow"></div>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quisquam, accusamus perspiciatis quo repellat tempora corporis fuga, delectus facere nisi enim in iusto inventore veritatis optio debitis deleniti commodi asperiores. Consequatur.</p>
    </div>
  </div>
  </div>
</div>
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CSS

            
              $bg_cl: #C5E1A5
$txt_col: #689F38
$bgl_c: #DCEDC8

body
  background: $bgl_c

.timeline
  color: $txt_col
  min-height: 80vh
  margin: 20px 0
  .timeline-container
    position: relative
    background: $bg_cl
    padding: 1em
    margin: 50px 30px 0 30px
    text-align: justify
  .timeline-bar
    position: absolute
    left: 49.6%
    height: 100%
    border-right: 5px solid $txt_col
    margin-bottom: 20px
  .timeline-arrow
    position: absolute
    left: 100%
    top: 50%
    &:after, &:before
    left: 100%
    border: solid transparent
    content: " "
    height: 0
    width: 0
    position: absolute
    pointer-event: none
    &:after
    border-color: rgba(255, 255, 255, 0)
    border-left-color: $bg_cl
    border-width: 12px
    margin-top: -12px
    &:before
    border-color: rgba(0, 0, 0, 0)
    border-left-color: $bg_cl
    border-width: 13px
    margin-top: -13px
    
.timeline-right .timeline-arrow
  left: 0
  &:after
  border-color: rgba(255, 255, 255, 0)
  border-right-color: $bg_cl
  margin-left: -20px
  &:before
  border-color: rgba(255, 255, 255, 0)
  border-right-color: $bg_cl
  margin-left: -26px
  
.timeline-circle
  position: absolute
  right: -66px
  top: 39%
  .fa-code
    padding: 0.5em
    border: 1px solid $txt_col
    border-radius: 50%
    background: $txt_col
    color: #fff
    font-size: 1.5em
    font-weight: 700
.timeline-right .timeline-container .timeline-circle
  left: -69px
!

JS
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