@mixin placeholder {
	&.placeholder {
		@content;
	}
	&:-moz-placeholder {
		@content;
	}
	&::-moz-placeholder {
		@content;
	}
	&:-ms-input-placeholder {
		@content;
	}
	&::-webkit-input-placeholder {
		@content;
	}
}

@mixin keyframes($name) {
	@if #{$name} != '' {
		@keyframes #{$name} {
			@content;
		}
		@-moz-keyframes #{$name} {
			@content;
		}
		@-webkit-keyframes #{$name} {
			@content;
		}
		@-ms-keyframes #{$name} {
			@content;
		}
		@-o-keyframes #{$name} {
			@content;
		}
	}
}