Source

Clearfix

Cito et facile fluitasse contentum in vase addendo clarificam utilitatem.

Facile patet s elemento parentisfloat addendo . Potest etiam adhiberi ut mixin..clearfix 

<div class="clearfix">...</div>
// Mixin itself
@mixin clearfix() {
  &::after {
    display: block;
    content: "";
    clear: both;
  }
}

// Usage as a mixin
.element {
  @include clearfix;
}

Hoc exemplum patet quomodo manifestatio adhiberi potest. Sine clarifica involutione div involucris globulis quae fractis causarent extensionem non circumirent.

<div class="bg-info clearfix">
  <button type="button" class="btn btn-secondary float-left">Example Button floated left</button>
  <button type="button" class="btn btn-secondary float-right">Example Button floated right</button>
</div>