Bootstrap timeline

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.bundle.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<div class="container py-5">

    <!-- For demo purpose -->
    <div class="row text-center text-white mb-5">
        <div class="col-lg-8 mx-auto">
            <h1 class="display-4" style='color: #000;'>Projet XYZ - Journal de bord</h1>
            <p class="lead mb-0" style='color: #000;'><i>pas de description sur ce journal</i></p>
            </div>
        </div><!-- End -->


        <div class="row">
            <div class="col-lg-7 mx-auto">
                
                <!-- Timeline -->
                <ul class="timeline">
                    <li class="timeline-item bg-white rounded ml-3 p-4 shadow">
                        <div class="timeline-arrow"></div>
                        <h2 class="h5 mb-0">CR Réunion
                        <span class="badge  badge-info float-right">Réunion</span>
                        </h2><span class="small text-gray"><i class="fa fa-clock-o mr-1"></i>13/08/2023 à 14h30</span>
                        <p class="text-small mt-2 font-weight-light">
                        <ul>
                        <li>JR nous envoie les specs du matériel mobile</li>
                        <li>MEP prévue : semaine du 11/09 au 14/09</li>
                        <li>Devises: pb de stockage en DB - à clarifier</li>
                        </ul>
                        </p>
                        <p>
                        <span class="badge  badge-info">Réunion</span>
                        </p>
                    </li>
                    <li class="timeline-item bg-white rounded ml-3 p-4 shadow">
                        <div...

CSS

/*
*
* ==========================================
* CUSTOM UTIL CLASSES
* ==========================================
*
*/

/* Timeline holder */
ul.timeline {
    list-style-type: none;
    position: relative;
    padding-left: 1.5rem;
}

 /* Timeline vertical line */
ul.timeline:before {
    content: ' ';
    background: #fff;
    display: inline-block;
    position: absolute;
    left: 16px;
    width: 4px;
    height: 100%;
    z-index: 400;
    border-radius: 1rem;
}

li.timeline-item {
    margin: 20px 0;
}

/* Timeline item arrow */
.timeline-arrow {
    border-top: 0.5rem solid transparent;
    border-right: 0.5rem solid #fff;
    border-bottom: 0.5rem solid transparent;
    display: block;
    position: absolute;
    left: 2rem;
}

/* Timeline item circle marker */
li.timeline-item::before {
    content: ' ';
    background: #ddd;
    display: inline-block;
    position: absolute;
    border-radius: 50%;
    border: 3px solid #fff;
    left: 11px;
    width: 14px;
    height: 14px;
    z-index: 400;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}


/*
*
* ==========================================
* FOR DEMO PURPOSES
* ==========================================
*
*/
body {
    background: #F3F3F3;
    min-height: 100vh;
}

.text-gray {
    color: #999;
}