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CSS

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CSS Base

About CSS Base

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JavaScript

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HTML 

              
                <a href="https://codepen.io/nahidul/pen/xPrbJj" target="_blank" class="another">Another Version</a>
<a href="https://codepen.io/nahidul/pen/MryEYG?editors=1000" target="_blank" class="another">Another Version</a>

<div class="timeline-wrapper">
		<ul class="timelin-main">
			<li>
				<div>
					<h2>John Doe</h2>
					<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Id, excepturi corrupti velit?</p>
				</div>
			</li>
			<li>
				<div>
					<h2>John Doe</h2>
					<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quas fugit facere delectus!</p>
				</div>
			</li>
			<li>
				<div>
					<h2>John Doe</h2>
					<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nemo placeat hic nam.</p>
				</div>
			</li>
			<li>
				<div>
					<h2>John Doe</h2>
					<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sapiente necessitatibus iste est!</p>
				</div>
			</li>
			<li>
				<div>
					<h2>John Doe</h2>
					<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Assumenda accusantium quae, delectus.</p>
				</div>
			</li>
			<li>
				<div>
					<h2>John Doe</h2>
					<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Molestias dolorum, quisquam facere.</p>
				</div>
			</li>
		</ul>
	</div>

<!-- extra -->
<div class="copyright">
	<p>
		Me On:
		<a href="https://www.toptal.com/resume/md-nahidul-islam" target="_blank" class="toptal">Toptal</a>
		
		<a href="https://upstack.co/team/md-35" target="_blank" class="upstack">Upstack</a>
		
		<a href="https://www.upwork.com/o/profiles/users/_~0195eb53c731b0e159/" target="_blank" class="upwork">UpWork</a>

		<a href="https://www.fiverr.com/thenahidul" target="_blank" class="fiverr">Fiverr</a>
	</p>
	<a href="https://www.toptal.com/B7avWk/worlds-top-talent" class="jobs" target="_blank">Jobs</a>
</div>
!

CSS 

              
                * {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
.another {
	margin-top: -30px;
	margin-bottom: 30px;
	display: block;
	font-size: 20px;
}

body {
	font-family: 'Open Sans', sans-serif;
	margin: 0 auto;
	padding: 50px;
	font-size: 15px;
	line-height: 1.6;
	background-color: #eee;
}

ul {
	margin: 0;
	padding: 0;
	list-style: none;
}

h2 {
	font-weight: 500;
	font-size: 20px;
	margin-bottom: 5px;
}

/*TIMELINE STARTS*/
.timeline-wrapper,
.timelin-main,
.timelin-main li {
	position: relative;
}

.timelin-main {
	padding: 60px 0;
}

.timeline-wrapper:before,
.timeline-wrapper:after {
	z-index: 4;
}

/*main top circle*/
.timeline-wrapper:before {
	top: 0;
}

/*main bottom circle*/
.timeline-wrapper:after {
	bottom: 0;
}

/*main vertical line*/
.timelin-main:before {
	top: 0;
	bottom: 0;
	width: 5px;
	z-index: 3;
}

/*news post - left right left right*/
.timelin-main li > div {
	width: 35%;
	padding: 15px 30px;
	border-radius: 5px;
	border: 1px solid rgb(9, 111, 183);
	background-color: rgb(25, 141, 224);
	position: relative;
	z-index: 9;
	box-shadow: 0px 0px 3px 0px rgb(46, 152, 228);
	color: white;
}

/*left*/
.timelin-main li:nth-child(odd) > div {
	float: left;
}

/*right*/
.timelin-main li:nth-child(even) > div {
	float: right;
}

.timelin-main li:nth-child(even) {
	margin-top: 100px;
}

/*clearing float*/
.timelin-main li:after {
	content: '';
	display: block;
	clear: both;
}

/*left news line*/
.timelin-main li:nth-child(odd) > div:after {
	left: 100%;
	-webkit-transform-origin: left center;
			transform-origin: left center;
}

/*right news line*/
.timelin-main li:nth-child(even) > div:after {
	right: 100%;
	-webkit-transform-origin: right center;
			transform-origin: right center;
}

/*horizontal line of news elements - depending on the li div width*/
.timelin-main li > div:after {
	width: 44.5%;
	height: 5px;
}

/*color of lines and circles - combined */
.timeline-wrapper:before,
.timeline-wrapper:after,
.timelin-main:before,
.timelin-main li:before,
.timelin-main li > div:after,
.timelin-main li > div:before  {
	content: '';
	position: absolute;
	background-image: -webkit-repeating-linear-gradient( 
		315deg, rgb(20, 106, 195), 
		rgba(12, 28, 228, 0.97) 25%, 
		rgba(13, 234, 163, 0.98) 25%, 
		rgba(39, 86, 193, 0.38) 50% );
	background-image: repeating-linear-gradient( 
		135deg, rgb(20, 106, 195), 
		rgba(12, 28, 228, 0.97) 25%, 
		rgba(13, 234, 163, 0.98) 25%, 
		rgba(39, 86, 193, 0.38) 50% );
	background-size: 12px 12px;
}

/*circle style*/
.timeline-wrapper:before,
.timeline-wrapper:after,
.timelin-main li:before,
.timelin-main li > div:before  {
	width: 12px;
	height: 12px;
	border-radius: 50%;
	border: 2px solid #fff;
	box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, 1);
	background: rgba(0, 144, 247, 1);
}

/*make sure the main line and main circles remain horizontally centered*/
.timeline-wrapper:before,
.timeline-wrapper:after,
.timelin-main:before {
	left: 50%;
	-webkit-transform: translateX(-50%);
			transform: translateX(-50%);
}

/*make sure the other lines and other circles remain vertically centered*/
.timelin-main li > div:after,
.timelin-main li > div:before  {
	top: 50%;
	-webkit-transform: translateY(-50%);
			transform: translateY(-50%);
}

/*circles on the main line*/
.timelin-main li:before {
	top: 50%;
	left: 50%;
	z-index: 10;
	-webkit-transform: translate(-50%, -50%);
			transform: translate(-50%, -50%);
/* 	background-color: red; // check which one */
}

.timelin-main li:nth-child(odd):before {
	margin-top: 23px;
}

.timelin-main li:nth-child(even):before {
	margin-top: -24px;
}

/*rotate the horizontal line*/
.timelin-main li > div:after {
	-webkit-transform: translateY(-50%) rotate(10deg);
			transform: translateY(-50%) rotate(10deg);
}

/*circle new element*/
.timelin-main li > div:before {
	right: 0;
	z-index: 3;
}

/*left news circle*/
.timelin-main li:nth-child(odd) > div:before {
	right: -7px;
}

/*right news circl*/
.timelin-main li:nth-child(even) > div:before {
	left: -7px;
}

@media screen and (max-width: 767px) {

	.timelin-main {
		padding: 75px 0;
	}
	.timelin-main li > div {
		width: 100%;
		padding: 40px 10px;
		text-align: center;
		box-shadow: none;
	}
	.timelin-main li:before {
		top: 0;
		-webkit-transform: translate(-50%, 0);
				transform: translate(-50%, 0);
	}

	.timelin-main li:nth-child(odd):before,
	.timelin-main li:nth-child(even):before {
		margin-top: -7px;
	}

	.timelin-main li:nth-child(odd) > div:before,
	.timelin-main li:nth-child(even) > div:before {
		bottom: -8px;
		left: 50%;
		top: auto;
		-webkit-transform: translateX(-50%);
				transform: translateX(-50%);
		
	}
	.timelin-main li:nth-child(even) > div:before {

	}
	.timelin-main li > div:after {
		display: none;
	}

	.timelin-main li {
		margin: 65px 0;
	}
	.timelin-main li:nth-child(even) {
		margin-top: 0;
	}
	.timelin-main li:first-child {
		margin-top: 0;
	}
	.timelin-main li:last-child {
		margin-bottom: 0;
	}
}

/* Animation */
.timeline-wrapper:before,
.timeline-wrapper:after,
.timelin-main li:before,
.timelin-main li > div:before {
	-webkit-animation: scale 2s cubic-bezier(1, -0.25, 0.05, 1.67) infinite;
			animation: scale 2s cubic-bezier(1, -0.25, 0.05, 1.67) infinite;
}

@-webkit-keyframes scale {

	0% {
		box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, 1);
	}

	25% {
		box-shadow: 0px 0px 0px 3px rgba(0, 144, 247, .7);
	}
	50% {
		box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, .5);
	}

	75% {
		box-shadow: 0px 0px 0px 3px rgba(0, 144, 247, .3);
	}

	100% {
		box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, 1);
	}

}

@keyframes scale {

	0% {
		box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, 1);
	}

	25% {
		box-shadow: 0px 0px 0px 3px rgba(0, 144, 247, .7);
	}
	50% {
		box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, .5);
	}

	75% {
		box-shadow: 0px 0px 0px 3px rgba(0, 144, 247, .3);
	}

	100% {
		box-shadow: 0px 0px 0px 2px rgba(0, 144, 247, 1);
	}

}


/* extra */
.copyright {
	text-align: center;
	margin-top: 30px;
	font-size: 1.6rem;
	background-color: #ededed;
}
.copyright a {
	display: inline-block;
	padding: 15px 2px;
}
.copyright a:not(:last-child):after{
	content: "/";
	margin-left: 10px;
}

.toptal {
	color: #204ecf;
}

.upstack {
	color: #008bf7;
}

.upwork {
	color: #37a000;
}

.fiverr {
	color: #1dbf73;
}

.jobs {
	color: magenta;
	text-decoration: underline;
	margin-top: -15px;
}
!

JS
!
999px

Console