@mixin transition($time) {
  -webkit-transition: all $time ease-out 0s;
  -moz-transition: all $time ease-out 0s;
  -ms-transition: all $time ease-out 0s;
  -o-transition: all $time ease-out 0s;
  transition: all $time ease-out 0s;
}

@mixin transform($values...) {
  -webkit-transform: $values;
  -moz-transform: $values;
  -ms-transform: $values;
  -o-transform: $values;
  transform: $values;
}

@mixin user-select($value) {
  -webkit-user-select: $value;
  -moz-user-select: $value;
  -ms-user-select: $value;
  user-select: $value;
}

@mixin box-sizing($value) {
  -webkit-box-sizing: $value;
  -moz-box-sizing: $value;
  box-sizing: $value;
}

@mixin animation($value) {
  -webkit-animation: $value;
  -moz-animation: $value;
  -o-animation: $value;
  animation: $value;
}

@mixin animation-delay($value) {
  -webkit-animation-delay: $value;
  -moz-animation-delay: $value;
  -o-animation-delay: $value;
  animation-delay: $value;
}

@mixin box-shadow($value) {
  -webkit-box-shadow: $value;
  -moz-box-shadow: $value;
  box-shadow: $value;
}

// Placeholder Mixins
@mixin placeholder {
  &::placeholder {
    @content;
  }
  &::-moz-placeholder {
    @content;
  }
  &::-moz-placeholder {
    @content;
  }
  &::-webkit-input-placeholder {
    @content;
  }
}

@mixin flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}