@mixin flex {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

@mixin d-align-item {
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

@mixin d-justify-content {
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
}

@mixin border($radius) {
  border-radius: $radius;
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
  -o-border-radius: $radius;
}

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