<div class="float-none">Don't float on all viewport sizes</div>
<div class="float-sm-none">Don't float on viewports sized SM (small) or wider</div>
<div class="float-md-none">Don't float on viewports sized MD (medium) or wider</div>
<div class="float-lg-none">Don't float on viewports sized LG (large) or wider</div>
<div class="float-xl-none">Don't float on viewports sized XL (extra-large) or wider</div>
You don't need to remember all CSS classes. Just use the Bootstrap Editor instead.