@import "compass";
@import "partials/variables";
@import "partials/mixins";

.style {
	color: $color1;
	@include MQ(Splus) {
		width: 80%;
	}
	@include MQ(Mplus) {
		width: 70%;
	}
	@include MQ(Lplus) {
		width: 60%;
	}
}
/* Lots more normal styles...

...

*/

/* First breakpoint */
@include MQ(Splus) {
	.styles {
		width: 80%;
	}
}

/* Second breakpoint */
@include MQ(Mplus) {
	.styles {
		width: 70%;
	}
}

/* Third breakpoint */
@include MQ(Lplus) {
	.styles {
		width: 60%;
	}
}