Center items with SASS mixins

center-mixins.scss

// to use: @include centerCenter;
// make sure the element has position: absolute, relative or fixed

@mixin centerCenter {
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

@mixin vertCenter {
  top: 50%;
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);
}

@mixin horzCenter {
  left: 50%;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
}