Prueba clearfix

by Christian Unigarro

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<div class="wrapper-float clearfix">
  <span>hola tio</span>
  <span class="pull-right">hola pipo</span>
</div>

SCSS

.wrapper-float {
  background-color: green;
  
  & > span {
    display: block;
    
    @media (min-width: 768px) {
      display: inline;
    }
  }
}