@mixin transform($property) {
    -webkit-transform: $property;
        -ms-transform: $property;
            transform: $property;
  }
  @mixin border-radius($radius) {
	border-radius: $radius;
	-webkit-border-radius: $radius;
	-ms-border-radius: $radius;
}

//usage: @include shift([property],[duration],[easing]);
@mixin transition($property: all, $duration: .4s, $ease: ease){
	transition: $property $duration $ease;
	-webkit-transition: $property $duration $ease;
	-moz-transition: $property $duration $ease;
	-ms-transition: $property $duration $ease;
}

@mixin background-content($repeat: no-repeat, $size: cover, $position: center center) {
	background-repeat: $repeat;
	background-size: $size;
	background-position: $position;
}

@mixin background-color($color) {
	background-color: $color;
}

@mixin width($width) {
	width: $width;
}

@mixin equal-size($width, $height: $width) {
	width: $width;
	height: $height;
}

@mixin equal-size-lineHeight($width, $height: $width, $Lheight: $width) {
	width: $width;
	height: $height;
	line-height: $Lheight;
}

@mixin flex-position($display, $contet, $items) {
	display: $display;
	justify-content: $contet;
	align-items: $items;
}

@mixin position($position) {
	position: $position;
}
@mixin absolute($position: absolute, $left:0, $top: 0) {
   position: $position;
   left: $left;
   top: $top;
}

@mixin center-position($top: $top, $left: $top) {
	top: $top;
	left: $top;
	transform: translate(-#{$top}, -#{$top});
}

@mixin inputPlaceholder() {
	$selector: '';
	$prefixes: (moz: "::-moz",
			webkit: "::-webkit",
			ie: ":-ms"
		);

	@each $prop,
	$value in $prefixes {
		@if $prop !="moz" {
			$selector: #{$value}-input-placeholder;
		}

		@else {
			$selector: #{$value}-placeholder;
		}

		@if & {
			&#{$selector} {
				@content;
			}
		}

		@else {
			#{$selector} {
				@content;
			}
		}
	}

	&::placeholder {
		@content;
	}
}