Angular create vertical timeline

I would like to create a Responsive vertical timeline as shown below. sorry, I am backend developer not that strong in CSS.



I was able to achieve something as shown below



Currently, I am looking for help in positioning my div left right as shown in picture one.

I am planing to use bootstrap and fa Icon

My CSS:

$text-color: #373737;
$gray-base: #494949;
$gray-darker: #222;
$gray-dark: #333;
$gray: #555;
$gray-light: #777;
$gray-lighter: #eee;
$brand-primary: #1f9eba;
$brand-success: #59ba1f;
$brand-info: #5bc0de;
$brand-warning: #d1bd10;
$brand-danger: #ba1f1f;

/* Timeline */
.timeline {
list-style: none;
padding: 20px;
position: relative;
&:before {
top: 40px;
bottom: 0;
position: absolute;
content: " ";
width: 3px;
background-color: #eeeeee;
left: 50%;
margin-left: -1.5px;
}
.timeline-item {
margin-bottom: 20px;
position: relative;
&:before,
&:after {
content: "";
display: table;
}
&:after {
clear: both;
}
.timeline-badge {
color: #fff;
width: 54px;
height: 54px;
line-height: 52px;
font-size: 22px;
text-align: center;
position: absolute;
top: 18px;
left: 50%;
margin-left: -25px;
background-color: $gray-dark;
border: 3px solid #ffffff;
z-index: 100;
border-top-right-radius: 50%;
border-top-left-radius: 50%;
border-bottom-right-radius: 50%;
border-bottom-left-radius: 50%;
i,
.fa,
.glyphicon {
top: 2px;
left: 0px;
}
&.primary {
background-color: $brand-primary;
}
&.info {
background-color: $brand-info;
}
&.success {
background-color: $brand-success;
}
&.warning {
background-color: $brand-warning;
}
&.danger {
background-color: $brand-danger;
}
}
.timeline-panel {
position: relative;
text-align: right;
width: 46%;
float: left;
right: 16px;
// border: 1px solid $gray-light;
background: #ffffff;
border-radius: 2px;
padding: 20px;
-webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
&:before {
position: absolute;
top: 26px;
right: -16px;
display: inline-block;
border-top: 16px solid transparent;
border-left: 16px solid $gray-light;
border-right: 0 solid $gray-light;
border-bottom: 16px solid transparent;
// content: " ";
}
.timeline-title {
margin-top: 0;
color: inherit;
}
.timeline-body > p,
.timeline-body > ul {
margin-bottom: 0;
}
.timeline-body > p + p {
margin-top: 5px;
}
}
}
.timeline-item:last-child {
&:nth-child(even) {
float: right;
}
}
.timeline-item:nth-child(even) {
.timeline-panel {
float: right;
text-align: left;
left: 16px;
&:before {
border-left-width: 0;
border-right-width: 14px;
left: -14px;
right: auto;
}
}
}
}
// .timeline-horizontal:extend(.timeline) {
// list-style: none;
// position: relative;
// padding: 20px 0px 20px 0px;
// display: inline-block;
// &:before {
// height: 3px;
// top: auto;
// bottom: 26px;
// left: 56px;
// right: 0;
// width: 100%;
// margin-bottom: 20px;
// }
// .timeline-item {
// display: table-cell;
// height: 280px;
// width: 20%;
// min-width: 320px;
// float: none !important;
// padding-left: 0px;
// padding-right: 20px;
// margin: 0 auto;
// vertical-align: bottom;
// .timeline-panel {
// top: auto;
// bottom: 64px;
// display: inline-block;
// float: none !important;
// left: 0 !important;
// right: 0 !important;
// width: 100%;
// margin-bottom: 20px;
// &:before {
// top: auto;
// bottom: -16px;
// left: 28px !important;
// right: auto;
// border-right: 16px solid transparent !important;
// border-top: 16px solid $gray-light !important;
// border-bottom: 0 solid $gray-light !important;
// border-left: 16px solid transparent !important;
// }
// }
// &:before,
// &:after {
// display: none;
// }
// .timeline-badge {
// size: 3em;
// top: auto;
// bottom: 0px;
// left: 43px;
// }
// }
// }


My HTML:

<div class="row">
<div class="col-md-12">
<div class="page-header">
<h1>Timeline</h1>
</div>
<ul class="timeline">
<li class="timeline-item">
<div class="timeline-badge">
<fa-icon [icon]="faCheck"></fa-icon>
</div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4 class="timeline-title">Mussum ipsum cacilds 1</h4>
<p><small class="text-muted"><i class="glyphicon glyphicon-time"></i> 11 hours ago via Twitter</small></p>
</div>
</div>
<div style="float: right; position: relative;text-align: right;"> Hello </div>
</li>
<li class="timeline-item">
<div class="timeline-badge"><i class="glyphicon glyphicon-check"></i></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4 class="timeline-title">Mussum ipsum cacilds 2</h4>
<p><small class="text-muted"><i class="glyphicon glyphicon-time"></i> 11 hours ago via Twitter</small></p>
</div>
<div class="timeline-body">
<p>Test</p>
</div>
</div>
</li>
<li class="timeline-item">
<div class="timeline-badge"><i class="glyphicon glyphicon-check"></i></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4 class="timeline-title">Mussum ipsum cacilds 3</h4>
<p><small class="text-muted"><i class="glyphicon glyphicon-time"></i> 11 hours ago via Twitter</small></p>
</div>
<div class="timeline-body">
<p>Test Content 1 </p>
<p>Test Content 2 </p>

</div>
</div>
</li>
<li class="timeline-item">
<div class="timeline-badge"><i class="glyphicon glyphicon-check"></i></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4 class="timeline-title">Mussum ipsum cacilds 4</h4>
<p><small class="text-muted"><i class="glyphicon glyphicon-time"></i> 11 hours ago via Twitter</small></p>
</div>
<div class="timeline-body">
<p>Test </p>
</div>
</div>
</li>
</ul>
</div>
</div>


Note: I took this sample from https://codepen.io/wdmg/pen/ZWmwNM

Any help is much appreciated.

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