Timeline

<h1>Esempio di una timeline:</h1>
<br>
<div class="timeline">
 <div class="container left">
 <div class="content">
 <h2>2016</h2>
 <p>Apre l'azienda ..</p>
 </div>
 </div>
 <div class="container right">
 <div class="content">
 <h2>2017</h2>
 <p>Cambiamo metodo di lavoro..</p>
 </div>
 </div>
 <div class="container left">
 <div class="content">
 <h2>2018</h2>
 <p>I risultati si iniziano a vedere ..</p>
 </div>
 </div>
</div>

* {
 box-sizing: border-box;
}


/* Set a background color */

/* The actual timeline (the vertical ruler) */
.timeline {
 position: relative;
 max-width: 1200px;
 margin: 0 auto;
 background-color: #474e5d;
 font-family: Helvetica, sans-serif;
}

/* The actual timeline (the vertical ruler) */
.timeline::after {
 content: '';
 position: absolute;
 width: 6px;
 background-color: white;
 top: 0;
 bottom: 0;
 left: 50%;
 margin-left: -3px;
}

/* Container around content */
.container {
 padding: 10px 40px;
 position: relative;
 background-color: inherit;
 width: 50%;
}

/* The circles on the timeline */
.container::after {
 content: '';
 position: absolute;
 width: 25px;
 height: 25px;
 right: -17px;
 background-color: white;
 border: 4px solid #FF9F55;
 top: 15px;
 border-radius: 50%;
 z-index: 1;
}

/* Place the container to the left */
.left {
 left: 0;
}

/* Place the container to the right */
.right {
 left: 50%;
}

/* Add arrows to the left container (pointing right) */
.left::before {
 content: " ";
 height: 0;
 position: absolute;
 top: 22px;
 width: 0;
 z-index: 1;
 right: 30px;
 border: medium solid white;
 border-width: 10px 0 10px 10px;
 border-color: transparent transparent transparent white;
}

/* Add arrows to the right container (pointing left) */
.right::before {
 content: " ";
 height: 0;
 position: absolute;
 top: 22px;
 width: 0;
 z-index: 1;
 left: 30px;
 border: medium solid white;
 border-width: 10px 10px 10px 0;
 border-color: transparent white transparent transparent;
}

/* Fix the circle for containers on the right side */
.right::after {
 left: -16px;
}

/* The actual content */
.content {
 padding: 20px 30px;
 background-color: white;
 position: relative;
 border-radius: 6px;
}

/* Media queries - Responsive timeline on screens less than 600px wide /
@media screen and (max-width: 600px) {
/ Place the timelime to the left */
 .timeline::after {
 left: 31px;
 }

/* Full-width containers */
 .container {
 width: 100%;
 padding-left: 70px;
 padding-right: 25px;
 }

/* Make sure that all arrows are pointing leftwards */
 .container::before {
 left: 60px;
 border: medium solid white;
 border-width: 10px 10px 10px 0;
 border-color: transparent white transparent transparent;
 }

/* Make sure all circles are at the same spot */
 .left::after, .right::after {
 left: 15px;
 }

/* Make all right containers behave like the left ones */
 .right {
 left: 0%;
 }
}