_mixins.scss

// opacity
@mixin opacity($opacity) {
    opacity: $opacity;
    $opacity-ie: $opacity * 100;
    filter: alpha(opacity=$opacity-ie); //IE8
  }
// transition
@mixin transition($args...) {
    -webkit-transition: $args;
    -moz-transition: $args;
    -ms-transition: $args;
    -o-transition: $args;
    transition: $args;
}// transition
@mixin border-radius($man) {
  -webkit-border-radius: $man;
  -moz-border-radius: $man;
  border-radius: $man;
}


// Flexbox display
@mixin flexbox() {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

// justify-content
@mixin justify-content($justify) {
  -webkit-justify-content: $justify;
     -moz-justify-content: $justify;
      -ms-justify-content: $justify;
          justify-content: $justify;
            -ms-flex-pack: $justify;
}

// align-content
@mixin align-content($align) {
  -webkit-align-content: $align;
     -moz-align-content: $align;
      -ms-align-content: $align;
          align-content: $align;
}

// Cross-axis Alignment
@mixin align-items($align) {
  -webkit-align-items: $align;
     -moz-align-items: $align;
      -ms-align-items: $align;
          align-items: $align;
}


// transform
// Browser Prefixes
@mixin transform($transforms) {
	-webkit-transform: $transforms;
	-moz-transform: $transforms;
	-ms-transform: $transforms;
	transform: $transforms;
}
// Translate
@mixin translate ($x, $y) {
	@include transform(translate($x, $y));
}
// TranslateY
@mixin translateY ($y) {
  @include transform(translateY($y));
  }
// TranslateY
@mixin translateX ($x) {
  @include transform(translateX($x));
  }


// Box shadows
@mixin box-shadow($shadow...) {
  -webkit-box-shadow: $shadow;
     -moz-box-shadow: $shadow;       
          box-shadow: $shadow;
}



@mixin background($imgpath,$position: center,$size: cover,$repeat: no-repeat) {
  background: {
      image: url($imgpath);
      position: $position;
      repeat: $repeat;
      size: $size;
  }
}
@mixin transform_time($total_time) {
  -webkit-transition: $total_time;
  transition: $total_time;
}
@mixin placeholder {
&.placeholder {
  @content;
}
&:-moz-placeholder {
  @content;
}
&::-moz-placeholder {
  @content;
}
&::-webkit-input-placeholder {
  @content;
}
}
@mixin transition($args: all 0.6s ease 0s) {
-webkit-transition: $args;
-moz-transition: $args;
-o-transition: $args;
transition: $args;
}

@mixin keyframes ($animation-name) {
@-webkit-keyframes #{$animation-name} {
  @content;
}
@-moz-keyframes #{$animation-name} {
  @content;
}
@-o-keyframes #{$animation-name} {
  @content;
}
@keyframes #{$animation-name} {
  @content;
}
}