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.float-start
.float-end
.float-none
.float-sm-start
.float-sm-end
.float-sm-none
.float-md-start
.float-md-end
.float-md-none
.float-lg-start
.float-lg-end
.float-lg-none
.float-xl-start
.float-xl-end
.float-xl-none
.float-xxl-start
.float-xxl-end
.float-xxl-none
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According to Bootstarp 5
<div class="float-start">Float start on all viewport sizes</div><br>
<div class="float-end">Float end on all viewport sizes</div><br>
<div class="float-none">Don't float on all viewport sizes</div>
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">