timeline.css

img { border: 0; max-width: 100%; }

.timeline .img-responsive {
  width: 100%;
}

#tlsmallimg {
  width: 50%;
}

.page-header h1 {
  font-size: 3.26em;
  text-align: center;
  color: #efefef;
  text-shadow: 1px 1px 0 #000;
}

/** timeline box structure **/
.timeline {
  list-style: none;
  padding: 0px 20px 0px 0px;
  position: relative;
  min-height:4000px;
}

.timeline:before {
  top: 0;
  bottom: 0;
  position: absolute;
  content: " ";
  width: 4px;
  background-color: rgba(194, 240, 236, 0.42);
  left: 49.4%;
  margin-left: -1.5px;
}

.tldate {
  display: block;
  width: 200px;
  background: #ffffff;
  margin: 0 auto;
  padding: 20px 0;
  font-size: x-large;
  text-align: center;
}

.timeline li {
  position: relative;
}

.timeline li:before, .timeline li:after {
  content: " ";
  display: table;
}
.timeline .tldate {
  clear: both;
}
.timeline li:before, .timeline li:after {
  content: " ";
  display: table;
}

/** timeline panels **/
.timeline li .timeline-panel {
  width: 99%;
  float: left;
  background: #fff;
  border: 1px solid rgba(143, 202, 197, 0.67);
  border-radius: 20px;
  padding: 20px;
  position: relative;
  margin-bottom: 25px;
}

/** panel arrows **/
.timeline li .timeline-panel:before {
  position: absolute;
  top: 26px;
  right: -15px;
  display: inline-block;
  border-top: 15px solid transparent;
  border-left: 15px solid rgba(143, 202, 197, 0.67);
  border-right: 0 solid rgba(143, 202, 197, 0.67);
  border-bottom: 15px solid transparent;
  content: " ";
}

.timeline li .timeline-panel:after {
  position: absolute;
  top: 27px;
  right: -14px;
  display: inline-block;
  border-top: 14px solid transparent;
  border-left: 14px solid #fff;
  border-right: 0 solid #fff;
  border-bottom: 14px solid transparent;
  content: " ";
}
.timeline li .timeline-panel.noarrow:before, .timeline li .timeline-panel.noarrow:after {
  top:0;
  right:0;
  display: none;
  border: 0;
}

.timeline .entry li.timeline-inverted .timeline-panel {
  float: right;
}

.timeline-inverted {
	clear:right;
	float:right;
}

.timeline li.timeline-inverted .timeline-panel:before {
  border-left-width: 0;
  border-right-width: 15px;
  left: -15px;
  right: auto;
}

.timeline li.timeline-inverted .timeline-panel:after {
  border-left-width: 0;
  border-right-width: 14px;
  left: -14px;
  right: auto;
}


/** timeline circle icons **/
.timeline li .tl-circ {
  position: absolute;
  top: 23px;
  left: 106%;
  text-align: center;
  background: #6a8db3;
  color: #fff;
  width: 35px;
  height: 35px;
  line-height: 35px;
  margin-left: -16px;
  border: 3px solid #90acc7;
  border-top-right-radius: 50%;
  border-top-left-radius: 50%;
  border-bottom-right-radius: 50%;
  border-bottom-left-radius: 50%;
  z-index: 1024;
}

.timeline li.timeline-inverted .timeline-panel {
	margin-left: 6px;
}

.month {
	clear:both;
}

/** timeline content **/

.tl-heading h4 {
  margin: 0;
  padding-top: 1em;
}

.tl-body p, .tl-body ul {
  margin-bottom: 0;
}

.tl-body > p + p {
  margin-top: 5px;
}

.tl-body {
  margin-bottom: 1em;
}

footer {
	clear:both;
}

@media (min-width: 992px) {
  .timeline li.entry {
    width: 47vw;
  }
}

/** media queries **/
@media (max-width: 991px) {
  .timeline li .timeline-panel {
    width: 44%;
  }
}

@media (max-width: 992px) {

  .timeline li.entry {
    width: 100%;
  }

  .page-header h1 { font-size: 1.8em; }
  
  ul.timeline:before {
    left: 1px;
  }
  
  .tldate {
    width: 200px;
  }

  ul.timeline li .timeline-panel {
    width: 95%;
  }

  ul.timeline li .tl-circ {
    top: 22px;
    left: 22px;
    margin-left: 0;

  }
  ul.timeline > li > .tldate {
    margin: 0;
    text-align: left;
  }

  ul.timeline > li > .timeline-panel {
    float: right;
  }

  ul.timeline > li > .timeline-panel:before {
    border-left-width: 0;
    border-right-width: 15px;
    left: -15px;
    right: auto;
  }

  ul.timeline > li > .timeline-panel:after {
    border-left-width: 0;
    border-right-width: 14px;
    left: -14px;
    right: auto;
  }
}