Maintain element's aspect ratio like a baller

aspect_ratio

.aspectRatio(@widthAspect, @heightAspect) {
	@aspect: @heightAspect/@widthAspect * 100;
	max-width: 100%;
 
	&:before {
		content: '';
		display: block;
		width: 100%;
                padding-bottom: ~"@{aspect}%";
	}
}