Bootstrap class: .align-self-*-end

<div class="align-self-end">Aligned flex item</div>

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

Preview

Flex item 1
Aligned flex item
Flex item 3

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