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1<div class="float-sm-left">Float left on viewports sized SM (small) or wider</div><br>
2<div class="float-md-left">Float left on viewports sized MD (medium) or wider</div><br>
3<div class="float-lg-left">Float left on viewports sized LG (large) or wider</div><br>
4<div class="float-xl-left">Float left on viewports sized XL (extra-large) or wider</div><br>

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