Clearfix: CSS float’s problem fix.

clearfix.css

/* Solve CSS float problem */

.clearfix { 
    *zoom: 1;
}
.clearfix:before,
.clearfix:after  {
    clear: both;
    content: " ";
    display: block;
}

clearfix.scss

/* SASS Version: Solve CSS float problem */

.clearfix { 
    *zoom: 1;
    
    &:before, &:after {
        clear: both;
        content: " ";
        display: block;
    }
}