<div class="align-self-start">Aligned flex item</div>
<!-- responsive variations -->
<div class="align-self-sm-start">Aligned flex item</div>
<div class="align-self-md-start">Aligned flex item</div>
<div class="align-self-lg-start">Aligned flex item</div>
<div class="align-self-xl-start">Aligned flex item</div>