contenu du centre de col bootstrap
<div class="row">
<div class="col-4 d-flex justify-content-center text-center">
// for image and text
</div>
</div>
ustify-contenu: flex-fin
<div class="d-flex justify-content-end">...</div>
bootstrap flex wrap
<div class="d-flex flex-wrap">...</div>
flex d'affichage bootstrap
<div class="d-flex">I'm a flexbox container!</div>