$aspect-ratios: (
	'1-1': '1 / 1',
	'2-1': '2 / 1',
	'4-3': '4 / 3',
	'9-16': '9 / 16',
	'16-9': '16 / 9'
) !default;

@each $name, $ratio in $aspect-ratios {
	.aspect-ratio-#{$name} {
		aspect-ratio: #{$ratio} !important;
	}
}