netzwahnHH

// Generate optional visibility layout classes for the different viewports of Bootstrap
// Sass adaption of Bootstrap v3.2 optional responsive CSS classes https://gist.github.com/webtobesocial/2f3d9254e696336a083b#file-column-classes-css

@mixin optional-viewport-only-column($visibilty-class)  {
	@for $i from 1 through 12 {
		.col-#{$visibilty-class}-#{$i}-only  {
			width: (($i/12)*100) * 1%;
		}
	}
}

netzwahnHH

@media (max-width: 767px) {
	/******************************************
	 * optional layout column classes
	 * for specified viewport xs only
	 ******************************************/
	.col-xs-12-only {
		width: 100%;
	}
	
	.col-xs-11-only {